Question 1 [1 point] Saved [Complete the sentence] In a hypothesis test... (9 the altematlve hypothesis is assumed to be true and we look for evidence otherwise. 1:") ththvpothesis is assumed to be true and we look for evidence otherwise. Question 2 [1 point] Saved The National Association of Realtors estimates that 23% of all homes purchased in 2013 were considered investment properties. A researcher believes this percentage is higher and sets off to find out. A random sample of 300 homes sold in 2018 is obtained and it was noted that 243 homes were to be used as investment property. What is the variable being studied? Is it numerical or categorical? 'O The variable is the number of homes purchased that are considered investment properties. The variable is numerical. The variable is the proportion of homes purchased that are considered investment properties. The variable is categorical. Question 3 [1 point] Saved A local juice manufacturer distributes juice in bottles labeled 12 ounces.A government agencv claims that the company is cheating its customers. The agency.r selects a random sample of 20 bottles, measures their contents. and obtains a sample mean of 11.? ounces with a standard deviation of 0.? ounce. What is the variable being studied? Is it numerical or categorical? The variable is the number of ounces of juice in the bottle. The variable is numerical. ."j The variable is the proportion of bottles with juice. \\_ The variable is categorical. Question 4 (1 point) Saved Null and alternative hypotheses are statements about parameters. Which of the following represent correctly written null and alternative hypotheses? OH. : p = 0.35 Ha : p > 0.35 OH. : u = 100 Ha : M > 100 OH. : * = 100 Ha : x > 100 Question 5 (1 point) Saved The null hypothesis is always a statement that we will assume is true. The alternative hypothesis is a statement that the researcher is trying to prove. Which of the following statements is INCORRECTLY stated. O Ho: p = 0.35 Ha: P # 0.35 O Ho: M = 100 Ha: M > 100 O Ho: M > 100 Ha: M = 100 Ho: P 2 0.35 Ha: P 95,000 O Ho: H = 95,000 Ha: H 95,000 Question 7 (1 point) ~ Saved In a hypothesis test, the parameter is defined as: p = the true proportion of Americans that are left-handed. Doctors believe that 10% of Americans are left-handed. A researcher believes this percentage has increased and wants to prove it. To that end, she collects a random sample of 800 Americans and finds 85 to be left-handed. Which are the correct hypotheses for this test? OH. : M = 0.10 Ha : M > 0. 10 OH. : p > 0. 10 Ha : p = 0. 10 OH. : p = 0. 10 Ha : p > 0. 10A randomly selected sample of 1,000 college students was asked whether they had ever used the drug Ecstasy. Sixteen percent {or 0.16} of the respondents surveyed said they had. Which one of the following statements about the number 0.16 ls correct? Q It is a margin of error. 0 It is the population proportion. C. It is a sample proportion. Q) It is a sample mean. Question 9 [1 point] Saved School district officials believe that a high percentage of students spend time reading at home. A teacher wants to convince these officials that less than 59% of students spend time reading at home. What are the correct null and alternative hypotheses? C) Ho: p = 0.59 Ha: p 0.59 (9 Ho: p = 0.59 Ha: [.1 83 hours/week O Ho: M = 80 hours/week Ha: H 80 hours/week O Ho: p = 0.80 Ha: p > 0.80 Question 15 (1 point) Saved Suppose a business person wishes to open a store in a local shopping center only if there is strong evidence that the average number of people in the center is greater than 5000 per day. He collects data on a randomly sample of 35 different days and finds the sample mean number of shoppers per day to be 5203 with a standard deviation of 110. Which of the following are the correct null and alternative hypotheses? O Ho: H = 5203 Ha: H > 5203 O Ho: M = 5000 Ha: H 5000 Ho: M = 5000 Ha: H # 5000