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1- The signs on an elevator states "Maximum Capacity 1,140 Kilogram" or 16 persons". If the mean weight is 75 kilos and the standard deviation of the weight is 10 kilos,
What is the probability that a sample of 16 persons would weigh more than 1140 kilos.
2- A factory's worker productivity is normally distributed. One worker (worker 1) produces an average of 75 units per day with a standard deviation of 20. Another worker (worker 2) produces at an average rate of 65 per day with a standard deviation of 21. What is the probability that during one week (5 working days) worker 1 will produce more than worker 2?
3- The long-distance calls made by the employees ofa company are normally distributed with a mean of 6.3 minutes and a standard deviation of 2.2 minutes. How long do the longest 10% of calls last
4- A certain type of tomato seed germinates 90% of the time. A backyard farmer planted 25 seeds.
a. What is the probability that exactly 20 germinate?
b. What is the probability that 20 or more germinate?
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance.
The 95% confidence interval is defined as ____. a) an interval such that we are 95% confident that the population value lies within the interval b) an interval such that the probability is 0.95 that the interval contains the population value
It was found that the correlation is about .80 and the regression equation is handspan = 3 + 0.35 height What is the predicted handspan for someone 5 feet tall?
What are the differences between regression and correlation analysis? What is correlation? Does correlation prove causation? Why or why not? Explain and provide examples to support your explanation.
In your opinion, which one/s of these factors (independent variables) will have a negative correlation with bone density and which one/s will have a positive correlation?
The City Transit Authority plans to hire 8 new bus drivers. From the group of 100 qualified applicants, of whom 55 are men and 45 are women, 8 names are to be selected by lot. Suppose that Mary and John Lewis are among the 100 qualified applicants..
Powerball is a lottery game. It involves choosing five white balls from a drum containing 55 balls and one red ball from a drum containing 42 balls. A player must match all five white balls and the red ball to win the jackpot.
Suppose a candidate running for sheriff claims that she will reduce the average speed of emergency response to less than 30 minutes.
Calculate 95 percent and 99 percent confidence intervals for m. Using the 95 percent confidence interval, can we be 95 percent confident that m is at least 50 pounds? Explain.
What is the Variance, Standard Deviation and Range of the following set of scores? 20,24,26,22,18,16,18 and then 10,15,12,18,19,16,12
what does P10, P20, P30, P40, and P95 mean
A driver hired at the beginning of a year can be used to meet the current year's requirements and is paid full salary for the current year.
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