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Given the binomial distribution with n = 23 and p = 0.79, would the normal distribution provide the reasonable approximation? Why or why not?
There are two telephone lines A and B. Let E1 be the event that line A is being used and E2 be the event that line B is being used
If we assume all the possible random samples of 250 students at this university, 95 percent of the samples should have means among what two numbers.
What can be completed to remedy multicollinearity.
Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 44. Determine the value of x from the following information.
Computation of Expectation, Variance and Covariance.Calculate the variances of Y1 and Y2.
He would like to estimate with .05 of the true proportion with a confidence level of 90%. What is the sample size needed?
The Absent Minded Professor study was a RCT, which had an objective to estimate the protective effect of drug "No-Reminder" compared to drug "Reminder" on risk of "Forgetful syndrome". The study found that the drug "No-Reminder" was protective.
Find out the least-squares regression line and interpret its slope.
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Compute the standard error of the proportion.
The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. The proportion of batteries with lifetimes exceeding 520 hours is approximately.
In a column, write the sample space for the experiment that consists of observing the day's production.
In regression equation, the value of y-intercept indicates the value of Y when the value of X is zero.
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