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In a two-tailed test, with n = 20, the computed value of t is found to be t* = 1.85. Assuming the sample is randomly selected from a normal population, then the p-value is given by:
A) 0.005 < p-value < 0.01.
B) 0.01 < p-value < 0.02.
C) 0.025 < p-value < 0.05.
D) 0.05 < p-value < 0.10.
Construct a 99% confidence interval for the proportion of customers favoring underground installation.
Construct three scatter plots for: (1) percentage alcohol versus calories, (2) percentage alcohol verses carbobydrates, and (3) calories versus carbohydrates
A clothing retailer wishes to investigate the relationship between order size (in dollars) and the level of satisfaction of the customer.
If we want to estimate the selling price on the basis of age, which variable is the dependent and which is the independent? Draw a scatter diagram.
To demonstrate the process is in control or out of control utilizing p-chart. A company which produces nails has retained you as a consultant.
Within each of your current careers/ jobs, there are sets of data that can be analyzed. For example, a teacher can use a set of test scores, a dietician can analyze a set of patient weights and correlate them to incidences of diabetes, and a sales..
Of those mountain climbers who attempt mt. McKinley, only 60% reach the summit. In a random sample of 14 mountain climbers who are going to attempt mt. McKinley, what is the probability of each of the following?
A recent study indicated that 29% of the 100 women over age 55 in the study were widows. If no estimate of the sample proportion is available how large should the sample be?
When determining the sample size necessary for estimating the true population mean, which factor is not considered when sampling with replacement
Find the P value or an interval containing the P value for the sample test statistic.
Suppose that verbal scores on SAT exam have a normal distribution with a population mean 500 points and population standard deviation of 100.
Based on testing, company makes following statement: "Our batteries last the average of 430 to 470 minutes, and our confidence in that interval is 95%" Find out standard deviation and show work.
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