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In Problems 9–14, the null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested?
13.
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- Q3. If the null hypothesis is not rejected when the null hypothesis is in error, what type of error, if any, has been made?arrow_forward1. Identify the parameter and set up null and alternative hypotheses. d. A drug company says their brand of over the counter pain medicine contains on average 1.25 grams of acetaminophen in each tablet. A consumer wants to find evidence against the drug company's claim. 1. Identify the parameter: 2. Null hypothesis: 3. Alternative Hypothesis: Social scientists suspects the median age of women at the birth of the first child is more than 25 years. 1. Identify the parameter: 2. Null hypothesis 3. Alternative Hypothesis: f. A consumer advocacy group wants to prove there is no difference between regular unleaded and premium unleaded average gas mileage. 1. Identify the parameter: 2. Null hypothesis: 3. Alternative Hypothesis: C.arrow_forwardPlease answer D and Earrow_forward
- A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 66%. 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 00 and the alternative hypothesis H, that we would use for this test. H, :0 H, :0arrow_forwardI need help with this problemarrow_forwardoscar wants to estimate the proportion of bilingual children in spain. It has been claimed that the proportion is 0.08 but oscar wants to conduct a hypothesis test to show that the ratio is higher than that. She picks 200 children at the from 6 to 10 at random from the regid stry and investigates whether they are age bilingual or not. Out of these 200 children, 23 were in fact bilingual. What is the test statistic that oscar uses in her hypothesis test? 1. 0.91 2. 1.55 3. 1.82 4. 5.99 5. R-command: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 75%. 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 Ho and the alternative hypothesis H, that we would use for this test. H7: 0 Oarrow_forwardA decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 69%. 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 hypothesis H, that we would use for this test. Ho: 0 H1: 0 O=0arrow_forwardRecords for an automobile leasing company indicate that the average number of miles their automobiles are driven annually has been about 16,000miles. The company suspects that this number decreased last year. Suppose that the company wants to choose a small sample of distances driven in the past year and perform a hypothesis test to determine its suspicion. Formulate the null hypothesish and the alternative hypothesish that would be used to perform this test. ho: 0 μ ô OSO ロ=ロ X X O S Oarrow_forwardA medical researcher claims that the proportion of people taking a certain medication that develop serious side effects is 12%. To test this claim, a random sample of 900 people taking the medication is taken and it is determined that 93 people have experienced serious side effects.. The following is the setup for this hypothesis test: Ho :p 0.12 Ha p 0.12 In this example, the p-value was determined to be 0.124. come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%) Select the correct answer below: The decision is to reject the Null Hypothesis. The conclusion is that there is enough evidence to reject the claim O The decision is to fail to reject the Null Hypothesis. The conclusion is that there is not enough evidence to reject the claimarrow_forwardContinued from first question.. Identifying the parameter and set up the null and alternative hypotheses: Identifying the parameter, null hypothesis, and alternative hypothesis. d. A drug company says their brand of over the counter pain medicine contains on average 1.25 grams of acetaminophen in each tablet. A consumer wants to findevidence against the drug company's claim. e. Social scientists suspects the median age of women at the birth of the first child in more than 25 years f. A consumer advocacy group wants to prove there is no difference between regular unleaded and premium unleaded average gas mileage. I need help remembering what to do because statistics is difficult for me.arrow_forward#12arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_iosRecommended textbooks for you
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