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Knowing that athletes tend to have a lower heartrate after exercising. Which students is in the best in shape?
Summary statistics:
Mean: 124.56 Median: 125 Std. Dev: 13.5
Z score Result:
HeartRate
Z Score
136
0.848946
144
1.442615
99
-1.89677
145
1.516823
135
0.774737
125
0.032652
115
-0.70943
127
0.181069
124
-0.04156
101
-1.74835
100
-1.82256
134
0.700529
130
0.403695
129
0.329486
121
-0.26418
123
-0.11577
116
-0.63523
126
0.10686
114
-0.78364
A survey of 600 non-fatal accidents showed that 251 involved the use of a cell phone. Find a point estimate for p, the population proportion of accidents that involved the use of a cell phone.
How much would ING be willing to pay if the General Counsel could arrange for an absolutely reliable mock trial?
Statistics is about more than calculations. It is about turning data into information and using this information to understand the population. A statistician will be asked to help solve real world problems by designing a study
tri-county utilities inc. supplies natural gas to customers in a three-county area. the company purchases natural gas
1. Using the Internet resources, find an example of a linear optimization model used in industry. Describe which industry it is or was used in and briefly discuss the problem or challenge it addressed.
Construct the ANOVA table (i.e. compute the between and within SS) and test if there appears to be any differences in means (use α = 0.05)
you are a manager of a 7-eleven. you have determined the probability a customer buys gasoline 0.32. you have also
the average life span for batteries is 100 hours with a standard deviation of 10 hours. construct a confidence interval
charles savings and loan is testing the hypothesis that the portion of deposit slips which are filled out incorrectly
Obtain the simple linear regression equation, then analyze the residuals by (a) constructing a histogram
What is the difference between strong negative and strong positive correlation? What does zero correlation tell you? Can you share a relationship between two variables that is typically negative?
Suppose that in a certain population of married couples 30% of the husbands smoke, 20% of the wives smoke, and in 8% of the couples both the husband and wife smoke. Is the smoking status (smoker or nonsmoker) of the husband independent of that of the..
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