Question

Use the contingency table to the right to complete parts? (a) through? (c) below. A B Total 1 42 18 60 2 18 22 40 Total 60 40 100 a. Find the expected frequency for each cell. A B Total 1 nothing nothing 60 2 nothing nothing 40 Total 60 40 100 ?(Type integers or? decimals.) b. Compare the observed and expected frequencies for each cell. Choose the correct answer below. A. The expected values are always greater than the observed values. B. The totals for the observed and expected frequencies are the same. C. The totals for the observed values are always greater than the totals for the expected values. D. The observed values are always greater than the expected values. c. Compute chi Subscript STAT Superscript 2. Is it significant at alphaequals0.025?? First let pi1 be the proportion of all events of interest in? A, and let pi2 be the proportion of all events of interest in B. Determine the hypotheses. Choose the correct answer below. A. Upper H 0 : pi 1 equals pi 2 Upper H 1 : pi 1 not equals pi 2 B. Upper H 0 : pi 1 greater than or equals pi 2 Upper H 1 : pi 1 less than pi 2 C. Upper H 0 : pi 1 not equals pi 2 Upper H 1 : pi 1 equals pi 2 D. Upper H 0 : pi 1 less than or equals pi 2 Upper H 1 : pi 1 greater than pi 2 Calculate the test statistic. chi Subscript STAT Superscript 2equals nothing ?(Round to two decimal places as? needed.) What is the? p-value? ?p-valueequals nothing ?(Round to three decimal places as? needed.) Is this value significant at alphaequals0.025?? A. Yes?, because the? p-value is less than or equal to the alpha level.? Therefore, the null hypothesis should not be rejected. B. No?, because the? p-value is greater than the alpha level.? Therefore, the null hypothesis should be rejected. C. No?, because the? p-value is greater than the alpha level.? Therefore, the null hypothesis should not be rejected. D. Yes?, because the? p-value is less than or equal to the alpha level.? Therefore, the null hypothesis should be rejected.

Answer #1

Use the contingency table to the right to complete parts? (a)
through? (c) below.
A
B
Total
1
1313
3737
5050
2
3737
3838
7575
Total
5050
7575
125125
a. Find the expected frequency for each
cell.
A
B
Total
1
2020
3030
5050
2
3030
4545
7575
Total
5050
7575
125125
?(Type integers or? decimals.)
b. Compare the observed and expected
frequencies for each cell.
Choose the correct answer below.
A.
The totals for the observed values are always...

Use the contingency table to the right to complete parts a
through c below
A
B
Total
1
52
18
70
2
18
12
30
Total
70
30
100
Find the expected frequency for each cell
A
B
Total
1
70
2
30
total
70
30
100
b) Compare the observed and expect frequencies for each cell
Choose the correct answer below
The totals for the observed and expected frequencies are the
same.
The observed values are always greater than...

In a study of 809 randomly selected medical malpractice
lawsuits, it was found that 471 of them were dropped or dismissed.
Use a 0.05 significance level to test the claim that most medical
malpractice lawsuits are dropped or dismissed. Which of the
following is the hypothesis test to be conducted? A. Upper H 0 : p
less than 0.5 Upper H 1 : p equals 0.5 B. Upper H 0 : p equals 0.5
Upper H 1 : p greater...

A genetic experiment involving peas yielded one sample of
offspring consisting of 411 green peas and 140 yellow peas. Use a
0.01 significance level to test the claim that under the same
circumstances, 27% of offspring peas will be yellow. Identify the
null hypothesis, alternative hypothesis, test statistic,
P-value, conclusion about the null hypothesis, and final
conclusion that addresses the original claim. Use the P-value
method and the normal distribution as an approximation to the
binomial distribution.
What are the...

Consider the hypothesis statement shown below using
alphaequals0.05 and the data to the right from two independent
samples.
Upper H 0 : mu 1 minus mu 2 greater than or equals 0
Upper H 1 : mu 1 minus mu 2 less than 0
?a) Calculate the appropriate test statistic and interpret the
result.
?b) Calculate the? p-value and interpret the result.
x overbar1
equals
121
x overbar2
equals
137
sigma1
equals
40
sigma2
equals
34
n1
equals
45
n2...

Conduct a test at the alphaequals0.10 level of significance by
determining (a) the null and alternative hypotheses, (b) the
test statistic, and (c) the P-value. Assume the samples were
obtained independently from a large population using simple random
sampling. Test whether p 1 greater than p 2. The sample data are x
1 equals 123, n 1 equals 248, x 2 equals 141, and n 2 equals
312. (a) Choose the correct null and alternative hypotheses below.
A. Upper H...

A genetic experiment involving peas yielded one sample
of offspring consisting of 416 green peas and 165 yellow peas. Use
a 0.01 significance level to test the claim that under the same
circumstances, 27% of offspring peas will be yellow. Identify the
null hypothesis, alternative hypothesis, test statistic,
P-value, conclusion about the null hypothesis, and final
conclusion that addresses the original claim. Use the P-value
method and the normal distribution as an approximation to the
binomial distribution.
What are the...

A genetic experiment involving peas yielded one sample of
offspring consisting of 438 green peas and 161 yellow peas. Use a
0.01 significance level to test the claim that under the same
circumstances, 24% of offspring peas will be yellow. Identify the
null hypothesis, alternative hypothesis, test statistic,
P-value, conclusion about the null hypothesis, and final
conclusion that addresses the original claim. Use the P-value
method and the normal distribution as an approximation to the
binomial distribution.
A. Upper H...

Assume a significance level of alpha equals 0.1 and use the
given information to complete parts (a) and (b) below.
Original claim: The standard deviation of pulse rates of a
certain group of adult males is more than 17 bpm. The hypothesis
test results in a P-value of 0.2678
a. State a conclusion about the null hypothesis. (Reject Upper
H 0 or fail to reject Upper H 0.) Choose the correct answer
below.
A. Reject Upper H 0 because the...

The table to the right contains observed values and expected
values in parentheses for two categorical variables, X and Y,
where variable X has three categories and variable Y has two
categories. Use the table to complete parts (a) and (b) below.
Upper X 1 Upper X 2 Upper X 3 Upper Y 1 34 left parenthesis 35.67
right parenthesis 43 left parenthesis 44.77 right parenthesis 51
left parenthesis 47.56 right parenthesis Upper Y 2 17 left
parenthesis 15.33 right...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 9 minutes ago

asked 22 minutes ago

asked 22 minutes ago

asked 23 minutes ago

asked 38 minutes ago

asked 38 minutes ago

asked 57 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago