Problem 1:data speeds5 Points

Consider an experiment that measures the data speeds of smartphones from several different carriers.The data for Verizon is below for your reference.

38.555.622.414.123.1

1a point estimate

What is the value of the point estimate of the population mean?

1b two narratives

Consider the two narratives given below:

b.1find the probability that 1 randomly selected smartphone has an individual speed greater than 40 mbps?

b.2find the probability that among 12 randomly selected smartphones (assume a normal distribution), the mean speed is greater than 40 mbps?

Which of the following questions invokes the central limit theorem and why?

1c unbiased estimator

Statistically speaking, how would you define an unbiased estimator in general?