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The blood pressure measurements of a single patient were taken by twelve different medical student and the results are listed below. construct a scatterplot, find a linear correlation coefficient r, and find the p-value using a=0.05. Is there sufficient evidence to conclude that there is a linear correlation between systolic measurments and diastolic measurments? systolic_(x) diastolic_(y)
136 92
130 91
140 101
120 82
124 88
124 81
128 83
132 83
133 84
144 95
140 103
139 91
a. What are the null ,alternative hypothesis?
b. Construct a scatterplot
c. the linear correlations coefficient r is?
d. the test statistic T is?
e. THe p-value?
5000 light bulbs each with an average life of 500 hours, standard deviation is 100 hours. Find the percentage of bulbs that can be expected to last between 540 hours and 780 hours.
based on table please evaluate the mean wait time and throughput rate for the following situations when using
If Kim expects to use phone for 21 hours per month, which plan must she choose?
Perform the following activities using a program such as MS Excel. Keep all calculations within one file. You may use separate worksheets within the same file, though.
Our decisions depend on how the options are presented to us. Here's an experiment that illustrates this phenomenon. Tell 20 subjects that they have been given $50 but can't keep it all.
We considered Mary's interest in doing a study to see if learning of 6th graders on a math lesson is affected by background noise level. She was planning to use 2 noise conditions and then analyze her outcomes using a t-test for independent groups..
More than 13 successes in 19 trials with a 40 percent chance of success. (Round the answer to 4 decimal places.) Fewer than 7 successes in 15 trials with a 40 percent chance of success. (Round the answer to 4 decimal places.)
q1. one hundred policyholders file claims with stressfree insurance. ten of these claims are fraudulent. claims manager
A sales person at a company sold 6,903,435 of hardware equipment last year, a figure that represented the eighth decile of sales performance at the company. What can you conclude about the salesperson performance?
The managers in a company's East and West regions were rated on the basis of the company's evaluation system. A researcher wishes to conduct a t-test of means to determine if there is a difference between the East and West regions.
a machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks
a researcher wants to know if there was a difference between urban and rural jurisdictions in the hiring of female
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