Question: 1. It has been reported that 48% of passengers play video games on their phones A random sample of 60 teenages is drawn. Find the probability that the proportion of teenagers in the sample who play videos games on their phone is less than 0.488

write only a number as your answer. Round to 4 decimal places for ( ex 0.3748) Do not write as a percentage.

2. consider the following hypotheses:

Ho: mean=7

H1:mean=7

A test is performed with a sample of size 36. The sample mean was 2.88 and the population standard deviation is 18. Assume that the population is approximately normal. Use the Ti-84 plus to compute the P-value. Round your answer to four decimal places (for ex. 0.0138). Write only a number as your answer.

3. Following are the weights of 5 boxes of cookies, each of which is labeled as containing 16 ounces. Assume that the population of weights is normally distributed.

15.91, 14.34, 14.88, 16.07, 14.79

- A quality control inspector wants to know whether the mean weight is actually less than 16 ounces. Compute the P-value of the test.

- Write down your P-value you will need it for the next question

- Write only a number as your answer. Round to four decimal places (for example: 0.3841).

4. In the last question, an quality control inspector wants to know whether the mean weight of the boxes of cookies is actually less than 16 ounces. What is the conclusion at the 0.05 level of significance.

Question options: There is evidence to conclude that the mean weight is actually less than 16 oz

- There is not enough evidence to conclude that the mean weight is actually less than 16 oz

- There is evidence to conclude that the mean weight is not less than 16 oz.