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Researchers wanted to measure the effect of alcohol on the development of the hippocampal region in adolescents. The researchers randomly selected 14 adolescents with alcohol use disorders. They wanted to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02cm cubed. An analysis of the sample data revealed that the hippocampal volume is approximately normal with x overbar equals 8.21 and s =0.7. Conduct an appropriate test at the alpha =0.05 level of significance.
Find the test statistic. t0 =
(Round to two decimal places as needed.)
Find the P-value.
The P-value is =
(Round to three decimal places as needed.)
if the null hypothesis that two means are equal is true where will 99 of the computed z-values lie between?a.
Sketch a scatter plot that could represent data from each of following. Label the axes to indicate the independent and dependent variable.
Let E denote the event that the ?rst airline's ?ight is fully booked on a particular day, and let F denote the event that the second airline's ?ight is fully booked on that same day. Suppose that P(E) = .7, P(F) = .6, and P1E ¨ F 2 = .54. Calcu..
A consumer watchdog organization wants to see whether Bank N in the northern part of a state has a higher default rate than Bank S in the southern part of that same state.
the level of nitrogen oxides nox in the exhaust of cars of a particular model varies normally with mean 0.24 grams per
we know many types of data fall into a normal distribution with most of the observations falling toward the middle.
1. What do the three types of longer reports have in common with one another? How do they differ? 2. What is plagiarism, and why is it critical to avoid plagiarism in both academic and business writing?
Given the crash information, what is the shortest time to complete the project, and how much extra will it cost to finish in the shortest possible time?
An office complex is lit by lightbulbs made by 2 companies, with 60% of the bulbs in use made by company A and 40% by company B. The lifetime (in years) for the 2 companies' bulbs are continuous uniform random variables Ta and Tb, respectively. Ho..
suppose that two 4-sided dice are rolled that is each die has faces with numbers 1 2 3 amp 4. what is the probability
What is simple linear regression? How is regression used to create equations and to make predictions?
What is the probability that the number of women who never eat breakfast is at least as large as the number of men who never eat breakfast?
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