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The weight of a candy bar is N(50, 1). We take a sample of 4 candy bars and compute the sample mean. The sample mean equals 51.
What is the sampling distribution of the sample mean?
What is a 95 percent Confidence Interval for the mean?
State the null and alternative hypothesis for a one-sided test where we think the mean is "greater than".
What is the Critical Value for the one-sided test (assume alpha = .05)? What is the P-value for the sample mean of 51? Can you reject the Null Hypothesis?
What is the power of the test if you think the mean is really 52? Assume alpha = .05.
The following frequency distribution reports electricity cost for sample of 50 two-bedroom apartments in Albuquerque, New Mexico during the month of May last year.
Farley purchases and pays for merchandise 60% in the month of acquisition and 40% in the following month. Accounts payable is used only for inventory acquisitions. How much cash will Farley receive during November?
A certain type of tomato seed germinate 90% of the times. if a farmer plants 25 seed, What is the probability that: -exactly 20 germinates more than 19 germinates.
With 95% confidence, what is the margin of error (to 2 decimals)? What is the 95% confidence interval estimate of the population mean?
In a BMT class test the scores of 8 students are: 11; 10; 6; 3; 11; 10; 9; 11. Assume the sores are a simple random sample from a normally distributed population. What is the point estimate of the standard deviation?
Multiple choice questions based on regression - multiple coefficient of determination
Place the steps below in the correct order for the construction of a control chart.
Below is the number of new cars sold at Sharkey in the last seven months and for the last eight months at Dave White. Do you agree with Mr. Sharkey? Use the .01 significance level."
q1 define what the chi square distribution is. why do you use the chi-square statistic? what type of data is used
If a fair six-sided die is rolled 1200 times, find the probability that an even number will occur at most 620 times.
finnish furniture manufactures tables in facilities located in three cities-reno denver and pittsburgh. the tables are
Find a 90 percent confidence interval estimate of the population mean and what is the 95 percent confidence interval estimate of the population mean.
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