There are 2 statements made about a confidence interval involving the difference between 2 population proportions....
There are 2 statements made about a confidence interval involving the difference between 2 population proportions. Explain the significance of zero if it lies within the bounds of the confidence interval for the difference of 2 population proportions? Does this mean there appears to be a difference between population proportions? Or, does this imply there does not appear to be a difference between population proportions?
Homework Answers
If the zero is lies between the confidance interval bounds then We fail to reject the null hypothesis means We can not concluded that the there is difference in two population proportions.
Yes , It imply there does not appear to be a difference between the population proportions
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There are 2 statements made about a confidence interval
involving the difference between 2 population proportions....
If the 95% confidence interval for the difference between two population proportions does not contain 0,...
If the 95% confidence interval for the difference between two population proportions does not contain 0, then the p value for the associated hypothesis test will be more than .05 more than .15 less than .05 none of the above
Construct the indicated confidence interval for the difference between population proportions p1- P2. Assume that the...
Construct the indicated confidence interval for the difference between population proportions p1- P2. Assume that the samples are independent and that they have been randomly selected. X1 = 19, n1 = 46 and x2 = 25, n2 = 57; Construct a 90% confidence interval for the difference between population proportions P1 - P2. A) 0.252 < P1 - P2 < 0.574 OB) 0.221 < P1 - P2 < 0.605 C) 0.605 < P1 - P2 < 0.221 OD) -0.187 <...
11. Construct the indicated confidence interval for the difference between population proportions. Assume that the samples...
11. Construct the indicated confidence interval for the
difference between population proportions. Assume
that the samples are independent and that they have been randomly
selected.
A marketing survey involves product recognition in New York and
California. Of 558 New Yorkers surveyed, 193 knew the product while
196 out of 614 Californians knew the product. Construct a 99%
confidence interval for the difference between the two population
proportions.
12. Construct the indicated confidence interval for the
difference between population proportions. Assume...
Two population prportions CI Find the confidence interval for the difference between two population proportions. 3) 3) A researcher finds that of 1000 people who said that they attend a religious...
Two population prportions CI Find the confidence interval for the difference between two population proportions. 3) 3) A researcher finds that of 1000 people who said that they attend a religious service at least once a week, 31 stopped to help a person with car trouble. Of 1200 people interviewed who had not attended a religious service at least once a month, 22 stopped to help a person with car trouble. Use 95 percent confidence to construct the confidence interval...
Explain what "95% confidence" means in a 95% confidence interval. What does "95% confidence" mean in...
Explain what "95% confidence" means in a 95% confidence interval. What does "95% confidence" mean in a 95% confidence interval? A. If 100 different confidence intervals are constructed, each based on a different sample of size n from the same population, then we expect 95 of the intervals to include the parameter and 5 to not include the parameter. B. The probability that the value of the parameter lies between the lower and upper bounds of the interval is 95%....
Question 8 2 pts Find the 99% confidence interval for the difference between two population proportions...
Question 8 2 pts Find the 99% confidence interval for the difference between two population proportions given the following information from independent samples: Sample 1: proportion p = 0.40. = 93 Sample 2: proportion p2 = 0.50, n2 = 86 O (-0.325,0.015) O 1-0.291,0.091) O (-0.179.-0.021) O (-0.298,-0.002) O (-0.417.0.317)
Large samples of women and men are obtained and the hemoglobin level is measured in each subject. Here is the 95% confidence interval or the difference between the two population means, where the mea...
Large samples of women and men are obtained and the hemoglobin level is measured in each subject. Here is the 95% confidence interval or the difference between the two population means, where the measures from women correspond to population 1 and the measures from men correspond to population 2 -1.76 g / dL·1 <-1.62 g /dL. Complete parts (a) through (c) below. a. What does the confidence interval suggest about equality of the mean hemoglobin level in women and the...
A 90% confidence interval for the difference between the means of two independent populations with unknown population...
A 90% confidence interval for the difference between the means of two independent populations with unknown population standard deviations is found to be (-0.2, 5.4). Which of the following statements is/are correct? CHECK ALL THAT APPLY. A. A two-sided two-sample t-test testing for a difference between the two population means is not rejected at the 10% significance level. B. The standard error of the difference between the two observed sample means is 2.6. C. A two-sided paired t-test testing for...
second part: What assumptions need to be made about this population? Construct a 95% confidence interval to estimat...
second part: What assumptions need to be made about this
population?
Construct a 95% confidence interval to estimate the population mean using the data below, X = 22 s=4.8 n 18 What assumptions need to be made about this population? The 95% confidence interval for the population mean is from a lower limit of (Round to two decimal places as needed.)
A. Given the confidence interval for a population proportions is .0641<p<.0.863 express this in the form...
A. Given the confidence interval for a population proportions is .0641<p<.0.863 express this in the form P^ + - E B. Given that x= 60.7 and E=2.605 express the confidence interval for the population mean in the form X-E<u< X+E (ROUND TO ONE DECIMAL)
Construct the indicated confidence interval for the difference between population proportions p1- P2. Assume that the samples are independent and that they have been randomly selected. X1 = 19, n1 = 46 and x2 = 25, n2 = 57; Construct a 90% confidence interval for the difference between population proportions P1 - P2. A) 0.252 < P1 - P2 < 0.574 OB) 0.221 < P1 - P2 < 0.605 C) 0.605 < P1 - P2 < 0.221 OD) -0.187 <...
11. Construct the indicated confidence interval for the
difference between population proportions. Assume
that the samples are independent and that they have been randomly
selected.
A marketing survey involves product recognition in New York and
California. Of 558 New Yorkers surveyed, 193 knew the product while
196 out of 614 Californians knew the product. Construct a 99%
confidence interval for the difference between the two population
proportions.
12. Construct the indicated confidence interval for the
difference between population proportions. Assume...
Two population prportions CI Find the confidence interval for the difference between two population proportions. 3) 3) A researcher finds that of 1000 people who said that they attend a religious service at least once a week, 31 stopped to help a person with car trouble. Of 1200 people interviewed who had not attended a religious service at least once a month, 22 stopped to help a person with car trouble. Use 95 percent confidence to construct the confidence interval...
Question 8 2 pts Find the 99% confidence interval for the difference between two population proportions given the following information from independent samples: Sample 1: proportion p = 0.40. = 93 Sample 2: proportion p2 = 0.50, n2 = 86 O (-0.325,0.015) O 1-0.291,0.091) O (-0.179.-0.021) O (-0.298,-0.002) O (-0.417.0.317)
Large samples of women and men are obtained and the hemoglobin level is measured in each subject. Here is the 95% confidence interval or the difference between the two population means, where the measures from women correspond to population 1 and the measures from men correspond to population 2 -1.76 g / dL·1 <-1.62 g /dL. Complete parts (a) through (c) below. a. What does the confidence interval suggest about equality of the mean hemoglobin level in women and the...
second part: What assumptions need to be made about this
population?
Construct a 95% confidence interval to estimate the population mean using the data below, X = 22 s=4.8 n 18 What assumptions need to be made about this population? The 95% confidence interval for the population mean is from a lower limit of (Round to two decimal places as needed.)
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