Two random samples are taken, one from among first-year WWU students and the other from among fourth-year WWU students. Both samples are asked if they favor modifying the cafeteria plan. A summary of the sample sizesand number of each group answering "yes" are given below. Is there evidence, at an a =conclude that there is a difference in proportions between first-years and fourth-years? Carry out an appropriatehypothesis test, filling in the information requested.0.09 level of significance, toFirst-Years (Pop. 1):Fourth-Years (Pop. 2): n2 86,n = 95, = 63I2 = 50a) The value of the test statistic is:b) The rejection region for the test statistic is:help (intervals)c) The p-value is:d) Your decision for the hypothesis testA. Reject HoB. Do Not Reject HAO C. Reject HAD. Do Not Reject Ho

It is given that For first years, sample size n1 = 95, x1 = 63 For fourth years, sample size n2 =…

Answered: a) The value of the test statistic is:…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a two sample (independent-sample) test, what must be true if t = 0? Group of answer choices A)The two population means must be equal. B)The two sample means must be equal. C)The two sample variances must be equal. D)The two population means must be not equal.
According to a recent census, 14.3% of all housing units in a certain country are vacant. A county supervisor wonders if her county is different from this. She randomly selects 893 housing units in her county and finds that 162 of the housing units are vacant. Complete parts a through d below. a) State the hypotheses. Let the proportion of housing units in the county that are vacant be denoted by p. Choose the correct answer below. OA. Ho: p<0.143 HA: P = 0.143 O C. Ho: p=0.143 HA: P<0.143 OB. Ho: p=0.143 HA: P = 0.143 O D. Ho: p20.143 HA: P<0.143 b) Name the model and check appropriate conditions for a hypothesis test. What kind of test is this? Choose the correct answer below. Two-proportion t-test Difference in proportions test Proportional t-test O One-proportion z-test Check the appropriate conditions for a hypothesis test. Select the correct choice below and fill in the answer boxes within your choice. (Round to one decimal place as needed.) successes and nqo = than 10. OA. The…
If N = 64, write the decision rules for a single-sample t test. Assume that the test is two-tailed and alpha is set a .05
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In a recent study of a random sample of 113 people, 92 reported dreaming in color. In the 1940’s, the proportion of people who reported dreaming in color was 29%. Is there evidence to show that the proportion of people who dream in color is different than the proportion in the 1940’s? What is the p-value for this hypothesis test? A) 6.04 x 10-35 B) 0.8142 C) 0.4071 D) 1.21 X 10-34 E) 12.279
Please answer 2.17
1. English test was administered to 19 boys and 21 girls, Test whether the girls differ in their scores from that of the boys. Use a=0.05. Follow the steps in hypothesis testing. Вoys: 30, 28, 25, 24, 16, 10, 19, 27, 28,16, 15, 23, 20, 18, 17, 12, 28, 9, 15. Girls: 27,18, 15, 10, 25, 29, 19, 23, 26, 20, 18, 10, 16, 28, 29, 24, 20, 24, 27, 12, 9.
A drug company is currently selling an allergy medication that gives relief to 75% of the people who use it. Now the company's scientists want to see if their new version of the drug works even better. a.)What's their null hypothesis? b.)What's the alternative hypothesis? c.)Check the conditions and assumptions for inference and name the test. 3 e d BIUA ALEX, 12pt $ 4 r f V G % 5 t g b A 6 y h C & 7 O U j * 8 m i k 9 Paragraph alt O 4 1 ) O JO 5 P MDI ctri ? 1 { [ F backspa
Perform the following test of hypothesis. Họ:µ = 285, H1:µ < 285, n = 55, F = 266.56, s = 42.90, a = Họ i not rejected. rejected. eTextbook and Media
The Consider the following hypothesis test: Ho : Null Hypothesis H. : Alternative Hypothesis The level of significance is defined as Select one: O a. the probability of accepting Ho when Ho is true as an equality O b. the probability of rejecting Ho when Ha is true as an equality O c. the probability of accepting Ho when Ha is true as an equality O d. the probability of rejecting Ho when Ho is true as an equality
info is given in the pic. HELP ASAP. 11) When using a hypothesis test with a = 0.05 to determine if the there is a differencebetween the two evaluators, what are the critical values for the hypothesis test?A) -1.65 and 1.65B) -1.96 and 1.96C) -2.228 and 2.228D) -2.201 and 2.201E) -2.080 and 2.080 12) When using a hypothesis test with a = 0.05 to determine if the there is a differencebetween the two evaluators, what is the test statistic for the hypothesis test?A) -0.32B) -2.73C) -1.01D) -1.06E) -0.54 13) The categorical variable marital status has the following values: single, married,separated, divorced, and widowed. To include marital status in a multiple regressionmodel, how many indicator variables will be included?A) ThreeB) TwoC) FiveD) OneE) Four
A student majoring in Business who has passed the Business Math course suspects that the average price of dinner at the X restaurant has increased during the pandemic. Before the pandemic, the price for dinner he paid was $21, $22, $22.50, $23, $23.50. After the pandemic, he paid $25, $25.50, $30, $27, and $26.50. a) Perform a hypothesis test analysis to find out whether there has been an average increase in the price of lunch (Use six Hypothesis Testing Steps with one tailed hypothesis test & without p value) ! b) Interpret (and explain) the results of point a above!

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a) The value of the test statistic is: b) The rejection region for the test statistic is: c) The p-value is: d) Your decision for the hypothesis test OA. Reject Ho OB. Do Not Reject HA OC. Reject HA OD. Do Not Reject Ho