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A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.
A. Estimate the value of the population proportion.
B. Develop a 99% confidence interval for the population proportion.
For the following scores, find the (A) mean, (B) median, (C) sum of squared deviation (d) variance, and (e) standard deviation:
Make a decision using the Decision Rule approach at given α = 0.05.
Find out the probbility that exactly five arrive within two days?
Test the claim that the mean age of the prison population in one city is less than 26 years. Sample data are summarized as n = 25, x = 24.4 years, and s = 9.2 years. Use a significance level of α = 0.05.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Mention the critical value of test statistic (Or give the p-value of the test.)
Speed of cars travelling on I-85 in Gaston County is normally distributed with average speed (µ) of 66 MPH and standard deviation (σ) of 8 MPH.
Use MegaStat's output for multiple regression to determine the multiple regression equation
What control chart(s) would you use for this data and what are the final control limits?
What factors might cause the company to order a larger or smaller amount than the EOQ?
Complete hypothesis test using a 5% level for risk with directional research hypothesis.
Use suitable one or two sided test for null hypothesis of no difference in them then changes rating between groups at 0.10 significance level.
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