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Researchers want to measure the effect of alcohol on the development of the hippocampal region in adolescents. The researchers randomly selected 11 adolescents with alcohol use disorders. They wanted to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm 3 (cube). An analysis of the sample data revealed that the hippocampal volume is approximately normal with X- (this should be x with a line over it) = 8.18 and s = 0.8. Conduct an appropriate test at the a= 0.05 level of significance.
Find the test statistic (round to 2 decimals places as needed)
T=
Find the P-value (round to 2 decimals places as needed)
P value is
a paint manufacturer wants to determine the average drying time of new interior wall paint. if for 15 test areas of
question a company is having a new corporate website developed. in the final testing phase the download time to open
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
Interpret the estimated coefficient for the toxemia variable and what are the odds of a hemorrhage for infants whose mother had toxemia?
A hardware retailer has average sales of $64,235 with a standard deviation of $5,918 for a 12-month period. The mean monthly sales for all retailers in the chain are $59,844. Is this hardware retailer's sales significantly different from all retai..
The lifetimes X of a certain brand of component used in a machine can be modeled as a random variable with pdf f(x) = (1/θ) e-(x/θ). The reliability R(x) of the component is de?ned as R(x) = 1 - F(x).
Assuming that the distribution is normal for weight relative to the ideal and 99% of the male participants scored between (-53.68, 64.64), where did 95% of the values for weight relative to the ideal lie? Round your answer to two decimal places.
a survey of 400 women for the american orthopedic foot and ankle society revealed that 38 wear flats to work.a. use
A random sample of 56 fluorescent light bubs has a mean life of 645 hours with a standard deviation of 31 hours.
In a study that examines the effect of a peer mentor on the heart rate of patients, what is the dependent variable
Students in the social work course received the following course grades. Create a frequency distribution for this data. Compute the mean. Determine the median.
Using the 0.10 level of significance, is there evidence that the population mean is above $300?
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