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A random sample of 21 ?people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.2 minutes.
Assume the population is normally distributed and use a? t-distribution to construct a 90?% confidence interval for the population mean μ.
What is the margin of error of μ??
The confidence interval for the population mean μ is
Show that the distribution of a random variable X with possible values 0, 1, and 2 is determined by µ1 = E(X) and µ2 = E(X2)
In a multiple regression equation, k = 5 and n = 20, MSE value is 5.10, and SS total is 519.68.
a student in a laboratory course on quality control methods measures the length of a bolt several times. when would it
If a sport utility vehicle were to incur $1000 in damages in the front-crash test, what level of repairs would be predicted for the rear-crash test?
a recent survey asked adults about their beliefs about premarital sex and whether they thought birth control should be
four mutually exclusive events a b c and d have probabilities of 0.1 0.2 0.3 and 0.4 respectively. what are the
Find the value of sample covariance in linear regression model
ANOVA with one observation per treatment (optional). If a two-way layout has just one observation for each treatment, the mean square for error (MSE) is 0 because there is no variation within each treatment group.
Given: 9. µ 100 and s 30 for a normally distributed population of observations. Suppose you randomly selected from this population a sample of size 36.
a company conducts random drug tests each month employee selections are independent of any previous months selections.
what is the probability that an organization selected at random will have at least one of the three types of benefits?
What is the probability that a randomly selected child in 2004 lived in poverty? Is whether a child lives in poverty or not independent of whether (s)he lives in a single-parent or married-couple home?
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