Consider a large population with p = proportion for a sample size of 410. Round your answer for standard deviation to three decimal places. i Hp 6A = P 0.23. Assuming < 0.05, find the mean and standard deviation of t i

The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

Find the area of the shaded region. The graph to the right depicts IQ scores of​ adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. A symmetric bell-shaped curve is plotted over a horizontal scale. Two vertical lines run from the scale to the curve at labeled coordinates 106 and 126, which are both to the right of the curve’s center and peak. The area under the curve between the vertical lines is shaded. Question content area bottom Part 1 The area of the shaded region is    enter your response here. ​(Round to four decimal places as​ needed.)

The police reported that the average driver exceeds the 50 miles per hour speed limit by more than 9 miles per hour on the busiest street in a small town. A sample of 63 randomly selected cars were clocked by airplane radar. The average speed was 57.5 miles per hour, and the standard deviation of the speeds was 4.17 miles per hour. Determine if the average speed is greater than what the police department reported. Which parameter(s) are you given? Mark all that apply. p μ σ none Which statistic(s) are you given? Mark all that apply. ¯x ˆp ˆq s x none What is the problem asking you to do? Estimate a parameter Test a given parameter