MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- State the null and the alternative hypothesesarrow_forwardA researcher wants to determine if a new advertising campaign improves the amount of time kids spend reading compared to the general population. If she rejects the null hypothesis, she has decided that the advertising campaign _____________ and that her sample of kids _____________. improves reading; is different from the general population doesn’t improve reading; is different from the general population improves reading; is the same as the general population doesn’t improve reading; is the same as the general populationarrow_forwardA recent study suggested that 81% of senior citizens take at least one prescription medication. Amelia is a nurse at a large hospital who would like to know whether the percentage is the same for senior citizen patients who go to her hospital. She randomly selects 59 senior citizens patients who were treated at the hospital and finds that 49 of them take at least one prescription medication. What are the null and alternative hypotheses for this hypothesis test? Select the correct answer below: {H0:p=0.81Ha:p>0.81 {H0:p≠0.81Ha:p=0.81 {H0:p=0.81Ha:p<0.81 {H0:p=0.81Ha:p≠0.81arrow_forward
- A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 74% . Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test. H0:H1:arrow_forwardYou are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly larger than 65% at a level of significance of a = 0.05. According to your sample, 66 out of 94 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v| Select an answer v (please enter a decimal) H1: |? v Select an answer v (Please enter a decimal) c. The test statistic ? v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly larger than 65% at a = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 65%. O The data suggest the population…arrow_forwardIn a recent Super Bowl, a TV network predicted that 41 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 101 people who saw the commercials and found that 36 of them said they would watch one of the television shows. Suppose you have the following null and alternative hypotheses for a test you are running: H0:p=0.41Ha:p≠0.41 Calculate the test statistic, rounded to 3 decimal placesz=arrow_forward
- A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 05%%. Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis H and the alternative hypothesisH that we would use for this test. H 0 H: 0 ?arrow_forwardThe local Hannaford is tracking mask compliance in their stores. In mid-March they found that only 40% of customers were wearing masks. They want to know if that percentage increased with the government mandates in place. Select the correct symbols to write the alternate hypothesis for this hypothesis test. Ha: [ Select ] [ Select ] .40arrow_forwardWhich statement is true? If you rejected the null hypohesis at alpha = 0.05, then Question 43 options: there is a 1.5% chance that you made a Type I error. there is a 2.5% chance that you made a Type I error. there is a 3.5% chance that you made a Type I error. there is a 4.5% chance that you made a Type I error.arrow_forward
- In a recent Super Bowl, a TV network predicted that 17 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 141 people who saw the commercials and found that 31 of them said they would watch one of the television shows.Suppose you have the following null and alternative hypotheses for a test you are running:H0:p=0.17Ha:p>0.17Calculate the test statistic, rounded to 3 decimal placesarrow_forwardCompared to a z-score, a hypothesis test with a t statistic requires less information from the population. Question 22 options: Truearrow_forwardFrom a study from earlier this year, it is believed that approximately 7% of U.S. adults do not use the internet. Suppose researchers are doing a study to see if the proportion of Washington state adults that do not use the internet is lower than the reported U.S. adult proportion. The researchers decide to survey 200 randomly selected adults throughout the state of Washington. a. Define a parameter for hypothesis testing and write the null hypothesis and alternative hypothesis for this studyarrow_forward
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