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8. The body mass index (BMID of an individual is a measure used to judge whether...
9) The body mass index (BMI) of an individual is a measure used to judge whether...
9) The body mass index (BMI) of an individual is a measure used
to judge whether an individual is overweight or not. A BMI between
20 and 25 indicates a normal weight. In a survey of 750 men and 750
women, the Gallup organization found that 203 men and 270 women
were normal weight. Construct a 90% confidence interval to gauge
whether there is a difference in the proportion of men and women
who are normal weight.
document or pdf with your answer. Your solution to each problem must have the following: •...
document or pdf with your answer. Your solution to each problem must have the following: • The null and alternative hypotheses with the appropriate symbols. • The significance level of the test. If it is not given use a significance level of 0.05. • The P-value for the test. • State whether you reject or fail to reject the null hypothesis. In other words, compare the P-value to the significance level to decide whether to reject or fail to reject...
A 2013 Gallup poll asked randomly selected U.S. adults whether they wanted to stay at their current body weight or change
Chapter 05.2 Exercise Question 21 5.2.21 A 2013 Gallup poll asked randomly selected U.S. adults whether they wanted to stay at their current body weight or change. One purpose was to investigate whether there was any difference between men and women with regard to this aspect. Of the 562 men surveyed, 242 wanted to stay at their current weight, whereas of the 477 women surveyed, 172 wanted to stay at their current weight. Use an appropriate randomization-based applet to find a p-value. Round...
A random sample of 400 men and 400 women was randomly selected and asked whether they...
A random sample of 400 men and 400 women was randomly selected and asked whether they planned to attend a concert in the next month. The results are listed below. Perform a homogeneity of proportions test to test the claim that the proportion of men who plan to attend a concert in the next month is the same as the proportion of women who plan to attend a concert in the next month. Use α = 0.05 Men Women Plan...
A recent opinion poll of funding for the arts asked, “Would you favor spending more federal...
A recent opinion poll of funding for the arts asked, “Would you
favor spending more federal tax money on the arts?” In a random
sample of 220 women from the U.S., 59 responded ‘yes.’ In a random
sample of 175 men from the U.S., 56 responded ‘yes.’ Use these data
as follows, to test whether there is any difference in the
proportion of men vs. women who favor spending more for the
arts:
c. From the output, report the test...
Test the claim that the proportion of women who own sports cars is significantly different than...
Test the claim that the proportion of women who own sports cars is significantly different than the proportion of men who own sports cars at the 0.05 significance level. Based on a sample of 20 women, 30% owned sports cars Based on a sample of 40 men, 55% owned sports cars The test statistic is: The p-value is: Based on this we: reject the null fail to reject the null
Test the claim that the proportion of women who own sports cars is smaller than the proportion of men who own sports car...
Test the claim that the proportion of women who own sports cars is smaller than the proportion of men who own sports cars at the .025 significance level. Based on a sample of 80 women, 40% owned sports cars Based on a sample of 60 men, 55% owned sports cars The test statistic is: (to 3 decimals) The p-value is: (to 3 decimals) Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
1. You are testing the claim that the proportion of men who own cats is larger...
1. You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats. You sample 70 men, and 30% own cats. You sample 170 women, and 10% own cats. Find the proportion of the pooled samples, (p sub c), as a decimal, rounded to two decimal places. 2. Test the claim that the proportion of men who own cats is smaller than the proportion of women who own cats...
Given in the table are the BMI statistics for random samples of men and women. Assume...
Given in the table are the BMI statistics for random samples of men and women. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. Male BMI Female BMI μ μ1 μ2 n 45 45 x 27.3958 24.7599 s 7.837628 4.750044 a. Test the claim that males and females have...
while her husband spent 2 ½ hours picking out new speakers, a statistician decided to determine...
while her husband spent 2 ½ hours picking out new speakers, a statistician decided to determine whether the percent of men who enjoy shopping for electronic equipment is higher than the percent of women who enjoy shopping for electronic equipment. The population was Saturday afternoon shoppers. Out of 69 men, 25 said they enjoyed the activity. 7 of the 22 women surveyed claimed to enjoy the activity. Interpret the results of the survey. Conduct a hypothesis test at the 5%...
9) The body mass index (BMI) of an individual is a measure used
to judge whether an individual is overweight or not. A BMI between
20 and 25 indicates a normal weight. In a survey of 750 men and 750
women, the Gallup organization found that 203 men and 270 women
were normal weight. Construct a 90% confidence interval to gauge
whether there is a difference in the proportion of men and women
who are normal weight.
document or pdf with your answer. Your solution to each problem must have the following: • The null and alternative hypotheses with the appropriate symbols. • The significance level of the test. If it is not given use a significance level of 0.05. • The P-value for the test. • State whether you reject or fail to reject the null hypothesis. In other words, compare the P-value to the significance level to decide whether to reject or fail to reject...
A recent opinion poll of funding for the arts asked, “Would you
favor spending more federal tax money on the arts?” In a random
sample of 220 women from the U.S., 59 responded ‘yes.’ In a random
sample of 175 men from the U.S., 56 responded ‘yes.’ Use these data
as follows, to test whether there is any difference in the
proportion of men vs. women who favor spending more for the
arts:
c. From the output, report the test...
while her husband spent 2 ½ hours picking out new speakers, a statistician decided to determine whether the percent of men who enjoy shopping for electronic equipment is higher than the percent of women who enjoy shopping for electronic equipment. The population was Saturday afternoon shoppers. Out of 69 men, 25 said they enjoyed the activity. 7 of the 22 women surveyed claimed to enjoy the activity. Interpret the results of the survey. Conduct a hypothesis test at the 5%...
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