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Question: A local 7-11 store conducted a survey to determine the average amount of money that beer drinkers spend during SPRING BREAK Week. A sample of 50 "winos" revealed that X = $24 and the standard deviation was $6.
• What is the point estimate of this population mean? What does it signify?• Using the 97% level of confidence, determine the confidence interval for u.
What is his expected cash balance at the end of the following May and what is the probability that his balance will be negative in one or more month?
without an automated irrigation system the height of plants two weeks after germination is normally distributed with a
Find a 95% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks has an average content of 2.25 deciliters.
Will an SRS of size 1785 usually give a result p-hat within plus or minus 3 percentage points of the true population proportion? Explain.
Construct a test of 20 objective type items in your subject. Administer test to a group of 50 students conduct an item analysis and write a report. Explain the meaning of co-efficient of correlation. Why does the homogeneity and heterogeneity of sco..
Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic, P-value, critical value(s), and state the final conclusion.
For 1989 and 1990 Dave Johnson had the highest decathlon score in the world. When Johnson reached a speed of 32 ft/sec on the pole vault runway, his height above the ground t seconds after leaving the ground was given by h= -16t^2+32t.
You are asked to test the CFO's claim by examining monthly profits from the sample mega stores using the Z-test. State the decision rule using α = 0.05 significance level?
A researcher wishes to estimate with 95% confidence, the proportion of adults who have high speed internet. Her estimate must be accurate within 2% of the true proportion. a) Find the minimum sample size needed using the previous study that sh..
What is the probability that no requests for assistance are in the system? What is the average number of requests that will be waiting for service? What is the average waiting time in minutes before service begins?
Question: If the regression line is drawn as Y = C + 1075x, when X was 2 and y was 239, given that the intercept was 11. Calculate the residual
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
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