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Reconsider the in-class example of fetal alcohol syndrome. Assume that an unreliable measurement was detected and discarded. Now the new sample mean is x = 149.2.
a) What is your new z-statistic?
b) What is the precise p-value? (hint: use SAS)
c) Construct a 95% confidence interval for mean height.
d) Construct an 99% confidence interval for mean height.
e) Should you reject H2 : u = 160:0 cm in favor of HA : u is not = 160:0 cm at the 0.05 level?
a number of tubes of toothpaste purchased by a typical family is a random variable having a poisson distribution with
Proportion of out-of-tolerance items is greater than 0.02, the robot will be overhauled. Otherwise it will be allowed to continue operating. What is the probability that a satisfactory robot will be overhauled unnecessarily?
several statistical tests have a way to measure effect size. what is this and when might you want to use it in looking
What percentage of those who were dating were obese?What percentage of those who were married were obese?
A firm has tendered for two independent contracts. It estimates that it has probability 0.4 of obtaining contract A, and probability 0.1 of obtaining contract B. Find the probability that the firm:
Find the Z scores for the following normal distribution problems
do the calculations. Show all your steps. P(B/A) = P (B1/A1) * P (B2/A2) * P(B3/A3). Evaluate the employer's knowledge of his/her employees.
Consider the data for Problem 6 about the relationship between smoking and lung cancer. Translate these scores to ranks and compute rS
Construct a scatter diagram for these data. Does the scatter diagram exhibit a negative linear relationship between the percentage of stock traded.
The pheno data set contains phenotype information for 2457 subjects from the Finland-United States Investigation of NIDDM Genetics (FUSION) study of type 2.
Find a 90% confidence interval for the population mean weight of all such turtles.
1. the random sample of five observations in exercise 1-1 found ? 11.2 and s2 9.2. state your assumptions and
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