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A Gallup Poll used telephone interviews to survey a sample of 1025 U.S. residents over the age of 18 regarding their use of credit cards. The poll reported that 76% of Americans said that they had at least one credit card. Give the 95% margin of error for this estimate.
Compare the standard deviation for the heights of males and the standard deviation for the heights of females in the class. Compare the values and explain what can be concluded based on the numbers.
an interaction effect that is not significant indicates thata. the influence of one factor is not the same for each
according to the census bureau 68 of americans owned their own homes in 2003. a local real estate office wants to see
State the null and alternate hypotheses. Calculate the sample standard deviation. Determine which test statistic is appropriate (chi-square or F), and calculate its value.
engine capacity the engine in a 1957 chevrolet corvette has eight cylinders. each cylinder is a right cylinder with a
a morgan stanley consumer research survey sampled men and women and asked each whether they preferred to drink plain
Your company manufactures low calorie frozen dinners. The advertised calorie content is 200 calories. A consumer activist group, FACT: fat and calories tribunal, is claiming that your product is not consistent.
a study is made of residents in phoenix and its suburbs concerning the proportion of residents who subscribe to
The mean starting salary for college graduates in the spring of 2000 was$31,280. Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of 3,330.
a machine has 9 identical components that function independently. the probability that a component will fail is 0.2.
Mean satifaction differ according to how they most use the bank? Identifing notation, state the null and alternitive hypotheses for conducting an ANOVA with data from the survey?
What is dispersion? Briefly name five measures of dispersion. Describe the characteristics of the standard deviation. Explain
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