Question 6 (10 points) Parking in a certain city averages $7 per hour. A civic group suspects that this has increased significantly. They randomly sample 30 parking garages and lots to test this suspicion. Use the data below and a 0.10 significance level to determine if a significant increase has occurred. Click here to open this data in StatCrunch. Parking fee per hour 9 8.75 5.75 10 6.25 5.5 6.75 7.75 4.5 7.75 8 8.5 7 6 8 7 9 8.25 11.5 7 9.5 11.5 7.25 6 7.75 7.5 7.5 9 8 10 Which set of hypothesis statements are correct? Ho: p = 7 Ho:H = 7 Hou = 30 Ho:H = 7 A. HA: P > 7 B. HA:H 30 D. HA:H > 7 AQuestion 14 (4 points) Bottles of water have a label stating that the volume is 12 oz. A consumer group suspects the bottles are under-filled and plans to conduct a test. A Type 1 error in this situation would mean The mean is less than 12 oz. and consumer group conludes the bottles have less than 12 oz. The consumer group concludes the bottles have less than 12 oz. when the mean actually is 12 OZ. O The mean is 12 oz. and the consumer group concludes the bottles have 12 oz. The consumer group does not conclude the bottles have less than 12 oz. when the mean actually is less than 12 oz. Question 15 (4 points) The battery of a particular mobile phone is supposed to last 12 hours before being recharged. A quality-control manager for the manufacturer is concerned that the battery may not last that long. He randomly selects 150 mobile phones from the factory and measures their lengths of use before needing a recharge. What type of hypothesis test would you recommend he perform for this situation?The mean is 12 oz. and the consumer group concludes the bottles have 12 oz. The consumer group does not conclude the bottles have less than 12 oz. when the mean actually is less than 12 oz. Question 15 (4 points) The battery of a particular mobile phone is supposed to last 12 hours before being recharged. A quality-control manager for the manufacturer is concerned that the battery may not last that long. He randomly selects 150 mobile phones from the factory and measures their lengths of use before needing a recharge What type of hypothesis test would you recommend he perform for this situation? OHypothesis test for 2 proportions Hypothesis test for 1 mean Hypothesis test for 1 proportion Hypothesis test for 2 meansQuestion 12 (9 points) Is there a difference in the proportion of males and females that use twitter? In a 2019 survey, the Pew Research Group found that 209 of 828 males reported using Twitter while only 141 of 674 females reported using Twitter. Is there sufficient evidence to show that the proportions are significantly different? Hypothesis test results: Difference Count1 Total1 Count2 Total2 Sample Diff. Std. Err. Z-Stat P-value PF - PM 141 674 209 828 -0.043216646 0.021932098 -1.9704748 0.0488 Ho: Hf = Hm Ho : PA = PB Ho : Pf = Pm Ho : Pf = Pm A. HA: Hf * Hm B. HA : PA > PB C. HA: pf * Pm D. HA : Pf M2 C. HA:H > 50 D. HA: H1 # M2 First , choose which hypothesis statements is correct. A t-stat = A Round to 2 decimal places. P-value = A/ Do not round. Decision: Type Retain Ho or Reject Ho Question 11 (6 points)Type Reject Ho or Retain Ho. Question 13 (3 points) A leasing firm operates on the belief that the annual mean number of miles driven in its leased cars is 13,500 with a standard deviation 4,000 miles. To see whether this belief is valid, a random sample of 45 one-year-old cars were checked and the sample mean was 14, 100 and standard deviation 3,750 miles Which assumptions or conditions are not met for this hypothesis testing problem. If all are okay then choose "None." Randomization Assumption Independence Assumption Is n big enough? None Question 14 (4 points) Bottles of water have a label stating that the volume is 12 oz. A consumer group suspects the bottles are under-filled and plans to conduct a test. A Type 1 error in thisP-value = A Do not Round. Decision: Type Retain Ho or Reject Ho. Question 9 (6 points) Please write a statement that summarizes your findings from the hypothesis test above. Be sure to use the context of the problem. Question 10 (10 points) The MTA wants to know if, on weekdays, more passengers ride the red train towards the city center that departs at 8:00am than the one that departs at 8:30am. The MTA randomly selected 50 weekdays for each departure time and noted the number of passengers. Use the summary statistics below to test at the 5% significance level whether the average number of passengers is greater on the 8:30 train. S 8:00am train (1) 50 332 46Question 5 (5 points) Suppose researchers determined the 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $3.37 to $4.04 What are they attempting to estimate? Op Question 6 (10 points) Parking in a certain city averages $7 per hour. A civic group suspects that this has increased significantly. They randomly sample 30 parking garages and lots to test this suspicion. Use the data below and a 0. 10 significance level to determine if a significant increase has occurred. Click here to open this data in StatCrunch.Question 11 (6 points) Please write a statement that summarizes your findings from the hypothesis test above. Be sure to use the context of the problem. A Question 12 (9 points) Is there a difference in the proportion of males and females that use twitter? In a 2019 survey, the Pew Research Group found that 209 of 828 males reported using Twitter while only 141 of 674 females reported using Twitter. Is there sufficient evidence to show that the proportions are significantly different? Hypothesis test results: Difference Count1 Total1 Count2 Total2 Sample Diff. Std. Err. Z-Stat P-value PF - PM 141 674 209 828 -0.043216646 0.021932098 -1.9704748 0.0488 Hour - Hm Ho : PA - PB Ho : Pf = Pm Ho : Pf - Pm A. HA: My * Hm B. HA : PA > PB C. HA: Pf * Pm D. HA: Pf