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Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At α = .01, is the degree of certainty independent of credits earned?
Credits Earned
Very Uncertain
Somewhat Certain
Very Certain
Row Total
0-9
12
8
3
23
10-59
4
10
22
60 or more
1
7
11
19
Col Total
21
24
64
A bank wants to get new customers for their credit card. They try two different approaches in their marketing campaign. The first promises a "cash back" reward; the second promises low interest rates. A sample of 500 people are mailed the first br..
Determine the pairs which are significant according to LSD and what pairs are important according to Bonferroni?
Suppose we wish to predict the crawling age of a particular baby when the average outdoor temperature is 25°F six months after birth.
What statistical procedure was used to analyze data in study B?
Create the corresponding decision tree and make recommendations.
Calculate the suitable mean response time from both proposed locations and find out which proposed site must be selected for the new emergency facility.
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
Which of the following(s) can be considered (a) variable(s)?
A busy landscaping supplies company sells wood chips for garden mulch. The mulch is sold by the cubic metre and delivered to households in a small truck.
The sample proportion of large gloves for each location is and . (Round your answers to 4 decimal places.)
Give a mathematical expression for the probability density function of driving distance.
how many chocolate chip cookies will he need to sample to estimate the mean to within 2, what is a 99% confidence interval for the average number of chips per cookie?
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