In a test for the difference between two proportions, the sample sizes were n1=68 and n2=76...
In a test for the difference between two proportions, the sample sizes were n1=68 and n2=76 , and the numbers of successes in each sample were x1=41 and x2=25 . A test is made of the hypothesis Ho:p1=p2 versus H1:P1>p2 are the assumptions satisfied in order to do this test?Explain. B) Find the test statistics value C) Can you reject the null hypothesis at the a=0.01 significance level? Use Ti-84 for calculations please.
Homework Answers
From the given information,
A. Yes, Assumptions are satisfied in order to do this test.
B. By using calculator,
Test statistic(Z)= 3.4177
C. Yes, We reject the null hypothesis at the a=0.01 significance level.
Thank you,
Add Answer to:
In a test for the difference between two proportions, the sample
sizes were n1=68 and n2=76...
Independent random samples of size n1=38 and n2=86 observations, were selected from two populations. The samples...
Independent random samples of size n1=38 and n2=86 observations, were selected from two populations. The samples from populations 1 and 2 produced x1=18 and x2=13 successes, respectively. Define p1 and p2 to be the proportion of successes in populations 1 and 2, respectively. We would like to test the following hypotheses: H0:p1=p2 versus H1:p1≠p2 (a)To test H0 versus H1, which inference procedure should you use? A. Two-sample z procedure B. One-sample z procedure C. One-sample t procedure D. Two-sample t...
Suppose that two same type process defect proportions are p1=0.05 and p2=0.03. Sample sizes are n1=n2-250....
Suppose that two same type process defect proportions are p1=0.05 and p2=0.03. Sample sizes are n1=n2-250. What is the power of the test for two-sided hypothesis testing? Alpha-0.05.
Find the sample proportions and test statistic for equal proportions. (a-1) Dissatisfied workers in two companies:...
Find the sample proportions and test statistic for equal proportions. (a-1) Dissatisfied workers in two companies: x1 = 46, n1 = 100, x2 = 36, n2 = 100, α = .05, two-tailed test. (Round your answers to 4 decimal places. Use Excel to calculate the p-value.) p1 p2 zcalc p-value zα/2 +/- (a-2) Choose the appropriate hypotheses. a. H0:π1 – π2= 0 vs. H1:π1 – π2 ≠ 0. Reject H0 if zcalc < –1.96 or zcalc...
Find the sample proportions and test statistic for equal proportions. (a-1) Dissatisfied workers in two companies:...
Find the sample proportions and test statistic for equal proportions. (a-1) Dissatisfied workers in two companies: x1 = 46, n1 = 100, x2 = 36, n2 = 100, α = .05, two-tailed test. (Round your answers to 4 decimal places. Use Excel to calculate the p-value.) p1 p2 zcalc p-value zα/2 +/- (a-2) Choose the appropriate hypotheses. a. H0:π1 – π2 = 0 vs. H1:π1 – π2 ≠ 0. Reject H0 if zcalc < –1.96 or zcalc > 1.96 b....
Conduct the following test at the α = 0.05 level of significance by determining (a) the...
Conduct the following test at the α = 0.05 level of significance by determining (a) the null and alternative hypotheses, (b) the test statistic, and (c) the P-value. Assume that the samples were obtained independently using simple random sampling. Test whether p1≠p2. Sample data are x1=30, n1=254, x2=36, and n2=302. (a) Determine the null and alternative hypotheses. Choose the correct answer below. A. H0: p1=0 versus H1: p1=0 B. H0: p1=p2 versus H1: p1<p2 C. H0: p1=p2 versus H1: p1>p2...
Independent random samples were selected from two binomial populations, with sample sizes and the number of...
Independent random samples were selected from two binomial populations, with sample sizes and the number of successes given below. Population 1 2 500 500 119 148 Sample Size Number of Successes State the null and alternative hypotheses to test for a difference in the two population proportions. O Ho: (P1-P2) # O versus H: (P1-P2) = 0 O Ho: (P1-P2) = 0 versus Hy: (P1-P2) > 0 HO: (P1-P2) < 0 versus Ha: (P1-P2) > 0 HO: (P1-P2) = 0...
A random sample of n1=130 individuals results in x1=35 successes. An independent sample of n2=149 individuals...
A
random sample of n1=130 individuals results in x1=35 successes. An
independent sample of n2=149 individuals results in x2=59
successes. Does this represent sufficient evidence to conclude that
p1<p2 at the ?=0.1 level of significance?
questions:
the given situation is about?
write the hypotheses for the test
h0:
h1:
calculate the test statistic:
(remaining in photo)
Idely the region See the cod choice below and finale bors within your choice (Type an integracimal rounded to two decimal places as needed)...
18 were killed. Use a 0.01 significance level to test the claim that seat belts are...
18 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative A simple random sample of front-seat occupants involved in car crashes is obtained....
Independent random samples of n1 = 900 and n2 = 780 observations were selected from binomial...
Independent random samples of n1 = 900 and n2 = 780 observations were selected from binomial populations 1 and 2, and x1 = 336 and x2 = 378 successes were observed. (a) Find a 90% confidence interval for the difference (p1 − p2) in the two population proportions. (Round your answers to three decimal places.) What assumptions must you make for the confidence interval to be valid? (Select all that apply.) 1. independent samples 2. random samples 3. n1 +...
Q5 Consider a problem of estimating the difference of proportions for two populations. In sample 1,...
Q5 Consider a problem of estimating the difference of proportions for two populations. In sample 1, out of nį subjects, Si of them are “successes” and the rest are “failures”. In sample 2, out of n2 subjects, S2 of them are “successes” and the rest are "failures”. It is known that Si ~ B(n1, p1) and S2 ~ B(n2, P2). We are interested in estimating p1 – P2. Si and 2 1. Denote ſi S. Show that Ôi – P2...
Suppose that two same type process defect proportions are p1=0.05 and p2=0.03. Sample sizes are n1=n2-250. What is the power of the test for two-sided hypothesis testing? Alpha-0.05.
Independent random samples were selected from two binomial populations, with sample sizes and the number of successes given below. Population 1 2 500 500 119 148 Sample Size Number of Successes State the null and alternative hypotheses to test for a difference in the two population proportions. O Ho: (P1-P2) # O versus H: (P1-P2) = 0 O Ho: (P1-P2) = 0 versus Hy: (P1-P2) > 0 HO: (P1-P2) < 0 versus Ha: (P1-P2) > 0 HO: (P1-P2) = 0...
A
random sample of n1=130 individuals results in x1=35 successes. An
independent sample of n2=149 individuals results in x2=59
successes. Does this represent sufficient evidence to conclude that
p1<p2 at the ?=0.1 level of significance?
questions:
the given situation is about?
write the hypotheses for the test
h0:
h1:
calculate the test statistic:
(remaining in photo)
Idely the region See the cod choice below and finale bors within your choice (Type an integracimal rounded to two decimal places as needed)...
18 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative A simple random sample of front-seat occupants involved in car crashes is obtained....
Q5 Consider a problem of estimating the difference of proportions for two populations. In sample 1, out of nį subjects, Si of them are “successes” and the rest are “failures”. In sample 2, out of n2 subjects, S2 of them are “successes” and the rest are "failures”. It is known that Si ~ B(n1, p1) and S2 ~ B(n2, P2). We are interested in estimating p1 – P2. Si and 2 1. Denote ſi S. Show that Ôi – P2...
Most questions answered within 3 hours.
-
Discuss the pros and cons of collaborative software such
as SameTime. Does it increase productivity? What...
asked 8 minutes ago -
1. Are all good samples random?
2. Magazines often report surveys giving statistics such as “63%...
asked 4 minutes ago -
Buying your in-laws a gift because it’s expected is
due to the ____________ motive of gift-giving....
asked 12 minutes ago -
A large cable company reports the following.
80% of its customers subscribe to its cable TV...
asked 10 minutes ago -
Calculate the expected value, the variance, and the standard
deviation of the given random variable X....
asked 55 minutes ago -
A hospital performs 100 surgeries per week. The probability that
complications after surgery occur is 10%....
asked 1 hour ago -
1 point) Given the significance level α=0.01 find the following:
(a) left-tailed z value z= (b)...
asked 53 minutes ago -
Assuming you are the head of the software development unit at
Cyber.Soft, explain and justify why...
asked 19 minutes ago -
Magnesium and nitrogen react in a combination reaction to
produce magnesium nitride. 3 Mg + N2...
asked 27 minutes ago -
Two electrons are initially at rest separated by a distance of
2nm. At time t=0, they...
asked 25 minutes ago -
A martial artist is practicing breaking 5 boards. He is able to
break aboard with probability...
asked 32 minutes ago -
The rate constant of a first-order reaction is 2.95 × 10−4 s−1
at 350.° C. If...
asked 35 minutes ago