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Find the unexplained variation for the paired data. The paired data below consists of test scores and hours of preparation for 5 randomly selected students. The equation of the regression line is = 44.8447 + 3.52427x. Find the unexplained variation. X Hours of preperation: 5, 2, 9, 6, 10 Y Test Score: 64, 48, 72, 73, 80
a. 87.4757
b. 96.103
c. 599.2
question university h has decided to accommodate more students this fall. knowing that typically 40 if the students
Mean caffeine content of 146 milligrams and a standard deviation of 22 milligrams. At α = .10, do you have enough evidence to reject the shop's claim?
Assume that a 95% confidence interval for the mean is 14.5
If 9 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 47.6 tons. Assume that the variable is normally distributed.
Consequently, the consultants decide to test the null hypothesis ? ? 0 H : 33.7 . What is the value of the test statistic for testing this null hypothesis?
Unacceptable bacterial contamination on 20 flights. (a) At α = .05, does this sample show that more than 10 percent of all flights have contaminated water? (b) Find the p-value.
consider a normally distributed random variable x with mean of 8 and a variance of 4. what is the probability that x
a small company has 10 employees that receive a monthly paycheck and you calculate the mean and standard deviation for
What do confidence intervals represent? What is the most controllable method of increasing the precision of or narrowing the confidence interval
Each F-distribution is identified by two numbers of degrees of freedom, one for each of the two samples involved.
The MPG (Miles per Gallon) for a mid-size car is normally distributed with a mean of 32 and a standard deviation of .8. What is the probability that the MPG for a selected mid-size car would be less than 33.2.
determine the p-value in each case and decide whether at the 5 significance level the data provide sufficient eveidence
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