Jamal wants to determine if the mean midnight summer temperature exceeds 85 degr

Question

Jamal wants to determine if the mean midnight summer temperature exceeds 85 degrees in Orlando, Florida. In conducting an experiment to test this assertion, which of the following responses is the best expression of the appropriate null and alternative hypothesis? 11. a. The null hypothesis is that the mean is equal to 85, while the alternative hypothesis is that the mean is more than 85 b. The null hypothesis is that the mean is equal to 85, while the alternative hypothesis is that c. The null hypothesis is that the mean is equal to 85, while the alternative hypothesis is that d. The null hypothesis is that the mean is less than 85, while the alternative hypothesis is that the mean is less than 85 the mean is different from 85 the mean is more than 85 12. Baltimore City car registration records contain information about the type of car registered (e.g. SUV, compact car, etc.) David wants to know if SUVs get more parking tickets, on average, than compact cars. He plans to select a sample and use city parking ticket records to determine the number of tickets issued over the past 12 months for that sample. Which of the following sampling methods would best help David answer his question? a. David should select a random sample of SUVs and a random sample of compact cars from city car registration records. divide these records into two groups (SUV and compact car) assignment to divide these records into two groups (with and without parking tickets) b. David should randomly select city car registration records and use random assignment to c. David should randomly select vehicles from city registration records and use random d. David should select a random sample of SUVs and compact cars in his neighborhood sales data indicate that the average sale was $270 per transaction, with a population standard transaction, with a known population standard deviation of $90 after this training (the standard A furniture company wants to improve sales by training 140 of its staff members. Their past deviation of $80. After training, recent sales data indicates an average sale of $285 per error is 10.177). A manager conducts a hypothesis test to determine if the training made a 13. difference in the sales performance of its staff Conduct a two-tailed difference of means, and report the p-value to two decimal places In the design of a survey, which of the following best explains how to minimize response bias? a. Carefully word and field-test survey questions b. Increase the sample size c. Provide a set of answer choices to every question d. Randomly select the sample 14.

Explanation / Answer

11)

Give that claim that temperature exceeds 85 degree.

Null hypothesis:

Mean is less than 85

Alternative hypothesis

Mean greater than 85

Therfore answer is option D

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