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What if the size for each sample were increased to 20? Would a sample mean of 115 or more be considered unusual? Why or why not? Why is the Central Limit Theorem used?
Consider situations in your work or home that could be addressed through a continuous probability distribution. Describe the situation and the variables and determine whether the variables are normally distributed or not. How could you change these to a normally distributed dataset?
What is the appropriate procedure to test a significant difference in means between the two groups? Use the critical -value method.
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
At a 0.05 level of significance, does this data show that 2 year college students and private unversity students work an equivalent amount of time?
Wheel-Rite has agreed to ship the maximum number of wheel bearings that it produces each day to Itex when an order has been received.
A number of years ago, there was a popular television game show called Let's Make a Deal. The host Monty Hall, would randomly select contestants from the audience and, as the title suggests
Here is my data: these are the wages for women with a 2 yr degree, $11,702, $24,509, $34,746, $35,185 (median of $29,627) These are the wages for women with a 4 yr.
A diet is being developed which must contain at least 100 mg of vitamin C. Two fruits are used in this diet. Bananas contain 30 mg of vitamin C and Apples contain 20 mg of vitamin C. The diet must contain at least 100 mg of vitamin C. Which of the..
What is the 95% confidence interval for the proportion of all delinquent customer accounts at this manufacturing company?
A beverage company is trying to ?nd out the distribution of the breaking strength of their glass bottles. Fifty bottles are selected at random and tested for breaking strength, with the following results (in pounds per square inch):
Given: You are using a significance level of α = 0.05 to test a claim that p > 0.5. Your sample is a simple random sample of size n = 49. Calculate β for the test, assuming that the true population proportion is 0.7 and showing all work.
Does the confidence interval contain the value of 35 mm, which is believed to be the standard deviation of sitting heights of women?
Briefly describe correlational research. Name a variable from the workplace that might prove to provide a correlational relationship and explain why you would choose these two?
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