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Question: Historically, the precipitation of July in Twin Cities (in inches) approximately follows a normal distribution with a mean μ = 3.57 and a variance σ2 = 6.14. Would you still consider σ2 = 6.14 a valid value of the variance given that the sample variance for the precipitation of July in Twin Cities during the most recent 30 years is s2 = 11.08?
q1.ishs butter cookies sells large tins of butter cookies and small tins of butter cookies. the factory can prepare at
During normal business hours on the east coast, calls to the toll-free reservation number of the Nite Time Inn that the numb roy calls per minute can be described by the Poisson distribution.
State the formula for the test statistic and show your decision rule using the 1 percent level of significance. (c) Carry out the test. Show your work. (d) What assumptions are required?
Given the following data on the number of pints of ice cream sod at a local ice cream store for a 6 period time frame.
1)Find the margin of error for the given values of C, S, and N. C=0.95, S=3.8, N=64. E=? round 3 decimal places
Define the population. State the hypotheses for the study. Decide which statistical test is appropriate and compute the test statistic (z or t). Why is the test appropriate?
1.a forester wishes to predict the volume in cubic feet of usable lumber in a certain species of tree using the height
1.a researcher wishes to compare the effect of two stepping heights low and high on heartrate in a step-aerobics
Give a 99% confidence interval for the proportion of all U.S. adults who attended church or synagogue during the week preceding the poll.
Estimating the sample standard deviation using normal score - Find the sample standard deviation?
1. at your supermarket the typical shopper spends 18.93 with a standard deviation of 12.52. you are wondering what
Which of these best approximates the probability that a flight will land between 40 and 45 minutes late? .071 .284 .375 .643 .929.
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