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Rondezy
Questions and answers by visitors named
Rondezy
Questions (297)
THE MASS OF AN EMPTY DENSITY BOTTLE IS 20g
THE MASS OF THE BOTTLE FILLED WITH WATER IS 50g THE MASS OF THE BOTTLE FILLED WITH OIL
1 answer
123 views
LIST FOUR EQUATIONS OF MOTION
1 answer
50 views
EXPLAIN HOW v= u + at WAS DETERMINED
1 answer
54 views
In Mary's survey, she identified categories for her variables and wanted to test the association between categories. She
1 answer
94 views
TOMMY FLIPS A MARBLE INTO THE AIR. ITS INITIAL VELOCITY IS 8.0 m/s.
TAKING g = 10 m/s2 AND IGNORING AIR RESISTANCE, CALCULATE (i)
1 answer
104 views
DEFINE DENSITY AND RELATIVE DENSITY
1 answer
60 views
Peter questioned whether the sample would represent the population and Mary said it had to be in order to be a proper sample.
1 answer
54 views
John said Mary could know about the error is she calculated the standard error of the mean and the coefficient of variation.
1 answer
80 views
what gadget can be helpful in zoology
1 answer
81 views
how does physics work in a digital microscope
1 answer
78 views
how does a digital microscope help society
1 answer
89 views
Mean square is calculated by dividing sum of squares by degrees of freedom.
3 answers
205 views
The regression line requires the best fit line taken through the data points.
1 answer
135 views
If the answer falls in the region of accuracy, the null hypothesis is accepted.
1 answer
64 views
The probability that an event occurs only if a prior one happens is called apriori.
1 answer
146 views
Z scores facilitate the proportional determination of a sample into segmental capture of accuracy and precision in data
1 answer
149 views
The bell shaped curve is called the Gaussian
1 answer
107 views
The strength of association between two continuous variable can be determined by the correlation coefficient.
1 answer
67 views
The Bayes theorem is based on conditionality.
1 answer
101 views
is the Bayes theorem based on conditionality.
1 answer
82 views
The multiplication rule in probability allows for two events that can occur simultaneously.
1 answer
132 views
The ordinal scale is a ranking scale.
1 answer
136 views
Two events that cannot together is determined by the addition rule.
1 answer
91 views
are Two events that cannot occur together determined by the addition rule
1 answer
100 views
One can say that the regression and anova seem to be related because of the idea of finding the best fit for the data.
1 answer
99 views
The spread of the data which determines the error in the groups and between the groups is calculated by the sum of squares.
1 answer
73 views
The error margin is where the alternative hypothesis is accepted.
1 answer
113 views
Association between two categorical variables can be determined by simple linear regression.
2 answers
135 views
The area under the Gaussian indicates the probability of being accurately measured with precision
3 answers
170 views
In comparing the means of two samples that are considered random in order to test whether a significant difference exists, one
1 answer
91 views
when comparing the means of two samples that are considered random in order to test whether a significant difference exists, one
1 answer
86 views
how do you compare two means that are random
3 answers
91 views
The one way anova is constructed around the concept of determining goodness of fit between explanatory and outcome variable.
4 answers
193 views
The ratio scale is the highest measurement scale.
1 answer
102 views
The chi-square allows for the use of expected data to be contrasted with observed data points
1 answer
81 views
A fifty percent likelihood represents__________ probability
1 answer
94 views
There are five black puppies in a kennel. What is the probability of selecting two puppies?
4 answers
145 views
A botanist has four apple buds and two rose buds in separate baskets on the same table. What is the probability of successfully
4 answers
207 views
In an epidemic, the probability of having S|D is 0.2 and P(D) = 0.1. P(S|D') = 0.04 and P (D') = 0.01. What is the P(D|S)?
4 answers
119 views
In a town, it was found that water volume was determined by river height. if the relationship is linear and the coefficient for
4 answers
86 views
The relationship between weight and age was found to have a linear relationship with expression weight= 3.0 (age) +10. Predict
3 answers
165 views
In planting roses and using fertilisers, a botanist realised that the rate of growth increased and was correlated at 0.85.
3 answers
120 views
If a z score of 1.95 is equal to a p of 0.9744, what proportion is greater than1.95.
4 answers
150 views
From question #8, what proportion is between the mean and 1.95?
3 answers
116 views
1n a random sample of fishes from a pond, the mean tail length was 6.0 mm and the reference tail length for the species was
1 answer
81 views
In a random sample of fishes from a pond, the mean tail length was 6.0 mm and the reference tail length for the species was
1 answer
87 views
If the mean for group 1 in a clinical trial for the time for a drug X to act is 10 minutes and 8 minutes for group 2 and if the
1 answer
160 views
A geneticist is examining the relationship between genotype and phenotype for roses. He calculated a chi-square value of 4.1 for
4 answers
106 views
If the mean square between groups is 100 and the mean square within groups is 10. What is the F statistic?
1 answer
155 views
If a the constant for a regression is 0.8 and the standard deviation for the x variables is 4 while the standard deviation for
1 answer
192 views
If a the constant for a regression is 0.8 and the standard deviation for the x variables is 4 while the standard deviation for
1 answer
177 views
In a class of 20 students, twelve take mathematics and genetics, while eight take genetics only. What is the probability of
4 answers
137 views
Which formula is correct for determining the F statistic?
A) MSbg/MSwg B) SSbg/DFbg C) MSwg/MSbg D) SSwg/DFwg
1 answer
72 views
If a the constant for a regression is 0.8 and the standard deviation for the x variables is 4 while the standard deviation for
1 answer
74 views
A botanist has four apple buds and two rose buds in separate baskets on the same table. What is the probability of successfully
1 answer
76 views
In an epidemic, the probability of having S|D is 0.2 and P(D) = 0.1. P(S|D') = 0.04 and P (D') = 0.01. What is the P(D|S)?
0.004
1 answer
55 views
From question #8, what proportion is between the mean and 1.95?
0.0244 0.3577 0.4744 0.6744
1 answer
42 views
In a random sample of fishes from a pond, the mean tail length was 6.0 mm and the reference tail length for the species was
1 answer
64 views
If the mean for group 1 in a clinical trial for the time for a drug X to act is 10 minutes and 8 minutes for group 2 and if the
1 answer
108 views
Which formula is correct for determining the F statistic?
MSbg/MSwg SSbg/DFbg MSwg/MSbg SSwg/DFwg
1 answer
160 views
Which formula is correct for determining the F statistic?
SSbg/DFbg MSbg/MSwg MSwg/MSbg SSwg/DFwg
1 answer
64 views
In a town, 200 persons get the flu and of this group 20 have pain and 60 have fever. Determine the probability of selecting a
1 answer
117 views
In a town, 200 persons get the flu and of this group 20 have pain and 60 have fever. Determine the probability of selecting a
1 answer
67 views
In a town, 200 persons get the flu and of this group 20 have pain and 60 have fever. Determine the probability of selecting a
1 answer
78 views
In a sample of 100 patients, the critical cutoff value for glucose is 6 while the mean glucose reading for the sample is 8. The
1 answer
111 views
If the error margin in an analytical study is 20 %. What is the region of accuracy?
10% 20% 80% 90%
3 answers
158 views
If the error margin in an analytical study is 20 %. What is the region of accuracy?
A) 10% B) 20% C) 80% D) 90%
2 answers
95 views
A scientist is measuring systolic blood pressure for three patients. The expected normal value for systolic blood pressure is
2 answers
180 views
If the mean of a variable in a study is 200 with a standard deviation of 25, what would be the maximum value that could be
2 answers
123 views
If the error margin of a study is 20%, what would the accuracy level be?
100% 200% 20% 80%
3 answers
108 views
When the probability of falling in the error region is 0.05, this equates to a error margin of _______?
90% 95% 5% 2.5%
4 answers
79 views
In a tank, there are 6 goldfishes and 3 angel fishes. What is the probability of selecting 2 gold fishes and 1 angel fish?
1/9
3 answers
87 views
What would be the probability of selecting only 2 angel fishes?
0.33 0.90 1.00 1.33
3 answers
75 views
At a clinic, there are 100 patients, 50 patients have hypertension and only 30 show symptoms. What would be the probability of
2 answers
86 views
If the mean of a variable in a study is 10 with a standard deviation of 5, what would be the minimum value that could be
1 answer
73 views
A parameter for a population must be ______________.
varying independent homogeneous diverse
1 answer
125 views
A parameter for a population must be ______________.
1 answer
63 views
A parameter for a population must be ______________.
a. varying b. independent c. homogeneous d. diverse
1 answer
111 views
A parameter for a population must be ______________.
a. varying b. independent d. homogeneous c. diverse
1 answer
53 views
A parameter for a population must be ______________.
a. varying b. independent c. diverse d. homogeneous
1 answer
57 views
A parameter for a population must be ______________.
a) varying b) independent c) diverse d) homogeneous
1 answer
53 views
A parameter for a population must be ______________.
a. varying b. diverse c. homogeneous d. independent
1 answer
66 views
A parameter for a population must be ______________.
1 answer
69 views
f the results of an anova produces an F test of 3.89 at the requisite degrees of freedom compared to the critical value of F =
1 answer
137 views
The length of the stem for five roses were measured as follows: 2, 4, 6, 8, 10. The first quartile position is _________ .
1 answer
46 views
The length of the stem for five roses were measured as follows: 2, 4, 6, 8, 10. The first quartile position is?
1 answer
107 views
In a clinical trial where the before and after data was collected, the mean difference time it takes for relief of pain on a new
1 answer
110 views
In a plant trial, the number of plants that had diseases and rotten leaves were 4 and those without disease but had rotten
4 answers
137 views
In a plant trial, the number of plants that had diseases and rotten leaves were 4 and those without disease but had rotten
1 answer
79 views
In a class, there were 100 students, 50 took math and science while 20 took math only. The probability of picking a student who
1 answer
169 views
A biologist must select 4 fishes from a pond with a population of 100. The probability of selecting the four fishes is?
4 answers
105 views
A biologist must select 4 fishes from a pond with a population of 100. what is the probability of selecting the four fishes.
1 answer
95 views
If there are 6 tadpoles in a tank and 2 angel fishes, the probability of selecting one tadpole or one angel fish would be?
4 answers
185 views
A botanist is growing 20 red roses and 40 yellow roses. The probability of selecting 10 red roses and 20 yellow roses is?
4 answers
214 views
in a clinical trial there are 4 groups included in the study. The degrees of freedom for between groups is?
4 answers
106 views
The sum of squares is 120 for the total with a within sum of squares of 40. The between sum of squares is ?
3 answers
142 views
1. A group of fishes chosen randomly were being researched by a zoologist, who found that
the mean tail length of 100 fishes was
1 answer
93 views
Animals that rely on plant tissues for food are called
1 answer
63 views
2. Animals that feed on both plant and animals’ tissues are called_________.
A. Detritivores B. Herbivores C. Omnivores D.
1 answer
105 views
1. State two (2) organisms of the protected species categories list below:
i. Birds___________________________________________
2 answers
88 views
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