KINDLY HIGHLIGHT Answers

PART A

Suppose a normal distribution has a mean of five and a standard deviation of 1.75. What is the z-score of x = 4.5? (Round your answer to two decimal places.) 2=The sampling distribution of the sample mean is approximately normal when which of the following are true? (Select all that apply.) On 2 30 On 2 10 On s 30 O The population distribution is approximately normal.A quality control specialist for a restaurant chain takes a random sample of size 11 to check the amount of soda served in the 16 oz. serving size. The sample mean is 13.60 with a sample standard deviation of 1.51. Assume the underlying population is normally distributed. Find the 95% confidence interval for the true population mean for the amount of soda served. (Round your answers to two decimal places.)A company manufactures rubber balls. The mean diameter of a ball is 12 cm with a standard deviation of 0.2 cm. Define the random variable X in words. O X = products the company manufactures. O X = diameter of a rubber ball. O x = weight of a rubber ball. O X = standard deviation of a rubber ball