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In a survey of women in a certain country (ages 20-29), the mean height was 64.1 inches with a standard deviation of 2.99 inches. A random sample of 65 woman in this age group is selected.
What is the probability that the mean height for yhr sample is greater than 65 inches? ( round to 4 decimals)
Random sample of five North American adult is more than 7 hours a day? What is the probability that in random sample of 5 north American adults, all watch television more than 7 hours a day?
Suppose that scores on a particular test are normally distributed with a mean of 130 and a standard deviation of 19. What is the minimum score needed to be in the top 5% of the scores on the test?
A population is normally distributed with mean 42.7 and standard deviation 4.7. Find the following probability.
Measures of Central Tendency and Dispersion Overview In Unit 3, we examined a few formats for presenting data. In this context, we said that tables and charts are valuable because they can give us a quick impression
Write the regression. Interpret the regression constant and regression coefficient. Forecast a value for monthly salary.
At the 5% level of significance, would we reject the null hypothesis that the mean breaking load is 510 pounds or more?
Standard deviation of 1.4 inches. What is the probability that the average length of a steel from a sample of 36 is more than 27.65inches long?
Explain the decisions you made in the third cycle of the simulation. State the reasons for your decision and include an explanation of why you did not follow the recommendations of the stakeholders.
Based on the results of the test, can the consumer group report in its next publication that the tires last less than 60,000 miles?
Assume that the two tests use different scales to measure the same aptitude. If someone gets a SAT score that is the 67th percentile, find the actual score and the equivalent ACT score.
Choose at random one of the random sample averages of 5 rectangles. Calculate the average value for a random sample of 20 rectangles.
Solve the problem using the graphical solution procedure. Find out the optimal percentage allocations and the optimal total portfolio return
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