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Weekly postage expenses for your company have a mean of $312 and astandard deviation of $58. Your company has allowed $400 for postage per week inits budget.
(a) What is the approximate probability that the average weekly postage expensefor the past 52 weeks will exceed the budgeted amount of $400?
(b) What information would you need to determine the probability that postage forone particular week will exceed $400? Why wasn't this information required for(a)?
which of the following does not explain a possible relationship between variables when the null hypothesis is
valerie bertinelli and subway jared compete in a series of six wing eating contests. the voracious valerie consumes an
Find a 95% confidence interval for the true proportion of patients who experienced cotton mouth. Show your calculations and/or explain the process used to obtain the interval.
If we assume that the errors made by rounding off are iid and have a uniform distribution over the interval ( - ~, ~), compute approximately the probability that the sum of the integers is within two units of the true sum.
Identify the null hypothesis, alternative hypothesis, test statistic, p-value or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim.
a. Create a single index series for prices with Year 0 as the base year. b. Create a single index series for wages with Year 0 as the base year.
After time min{Vn, Wn}, where {Wn, n ≥ 1} is a sequence of independent, Exp(θ)-distributed random variables, θ > 0, which is indepen- dent of {Vn, n ≥ 1}. Show that the replacement process is a Poisson process and determine the intensity.
Using the information provided, determine the optimal number of clerks to have on duty each Satyrday to minimize the store's total expected cost.
Construct and interpret the 90% Confidence Interval for the mean starting salary of college graduates in developmental psychology. Salaries are in thousands.
1 due to normality the formula for computing z is the same for a single data value as it is for an average of the data
Suppose a baseball player had 211 hits in a season. In the given probability distribution, the randon variable X represents the number of hits the player obtained in a game. Compute and interpret the mean of the random variable x.
in a cohort breast cancer study a woman is considered to be exposed if she first gave birth at age 30 or older. in a
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