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As reported by a recent survey, the mean height of females 20 - 29 years old is u=63.9inches. If the height is approximately normally distributed with a=2.6inches, answer the following questions. What is the percentile rank of a 20 to 29 year old female who is 60 inches tall?
Furthermore, assume that the standard deviation of the population is $0.14. The value of the test statistic for this hypothesis test and the p-value respectively are?
Based on the Correlation following are Multiple choices question. If the correlation coefficient among two variables is equal to zero, what can be said of the variables X and Y.
The size of the home (reported below in thousands of square feet) increases the selling price (reported in $ thousands) also increases?
When we say we have confidence level of 95% what do you believe our "margin of error" is?
Define what a hypothesis is and discuss the relationship between hypothesis testing and statistics. Discuss what independent and dependent variables are in an experiment, state the relationship between the two and give an example.
Conduct a test to determine whether blood lactate level (y) is linearly related to perceived recovery (x). Use alpha = .05. Find the p-value for testing the hypotheses you gave in the previous problem. Show all decimal places in your answer.
A thorough examination reveals there is nothing wrong with the filling machine. From a statistical standpoint, was there a "type" error made? If yes, which type? Explain.
Give the Z- score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected
A jeweler at Tiffany & Company computes the value of the linear correlation coefficient for pairs of sample data consisting of Tiffany prices for gold wedding rings and the corresponding prices at a discount store.
Given following financing project being considered by venture film, determine critical path probability of completion by 17 weeks.
For a standard normal distribution, findout the percentage of data that are among 3 standard deviation below the mean also1 standard deviation above the mean.
A 1990 census report revealed that the mean distance that U. S. citizens live from their birthplace is 50 miles and that the standard deviation is 15 miles. A random sample of 49 residents of your city yielded a mean distance of 56 miles.
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