You believe a higher percentage of students receive “passed advanced” in your school as opposed to...

You believe a higher percentage of students receive “passed advanced” in your school as opposed to a neighboring school. A random sample of 84 students from your school showed that 19 were pass advanced, and a random sample of 156 students from a neighboring school showed that 31 were pass advanced. If appropriate, test your hypothesis at the significance level .05.

A: Are the assumptions met?

B: State the hypotheses

C:What is the test statistic?

D: What is the p-value?

E:What is your conclusion?

Solutions

Expert Solution

Z test hypothesis for difference of proportions.

orchestra answered 1 year ago

Next > < Previous

Related Solutions

You believe the rate of students who fail the SOL is lower for school A than...

You believe the rate of students who fail the SOL is lower for school A than school B. A random sample of 500 students from school A showed that 5.8% failed. A random sample of 400 students from school B revealed that 7.5% failed. A: Verify the assumptions. B:State the hypotheses C:What is the test statistic? D:Test this hypothesis at the significance level .02 E:What is your conclusion?

The percentage of students with a GPA of 3.0 or higher is 15%. Suppose the random...

The percentage of students with a GPA of 3.0 or higher is 15%. Suppose the random variable X represents the total number of students with a GPA of 3.0 or higher in a random sample of 500 students. a) Find the mean of X. (round to the nearest whole number) b) Find the standard deviation of X. (round to the nearest whole number) c) Determine the shape of the distribution for X. (letter only) A) skewed-left, since p > .5...

the council of higher education wants to compare the percentage of students that score A in...

the council of higher education wants to compare the percentage of students that score A in two universities. in a random sample of 100 students from university one, 80 received a grade of A; and in a random sample of 160 students from university two, 120 received a grade of A. the 95% confidence interval for the difference in proportion of students who received a grade of A is ???

The council of higher education wants to compare the percentage of students that score A in...

The council of higher education wants to compare the percentage of students that score A in two universities. In a random sample of 50 students from university one, 16 received a grade of A; and in a random sample of 40 students from university two, 8 received a grade of A. The 95% confidence interval for the difference in the proportion of students who received a grade of A is: a. -0.0638 to 0.3038 b. -0.0691 to 0.2983 c. 0.0365...

Researchers believe that a higher percentage of males are afflicted with cysturina than females. Suppose of...

Researchers believe that a higher percentage of males are afflicted with cysturina than females. Suppose of the 50 individuals, 15 were females and the remainder were males. Using 99% confidence, estimate the proportion of females with cysturina. Then estimate the proportion of females afflicted with cysturina at 96% confidence.

Problem #3 Faith and Healing. A higher percentage of southerners believe in God and prayer, according...

Problem #3 Faith and Healing. A higher percentage of southerners believe in God and prayer, according to a 1998 study by the University of North Carolina’s Institute for Research in Social Science. The survey was conducted by means of telephone interviews with 844 adults in 12 southern states and 413 adults in other states. One of the findings was that 46% of southerners believe they have been healed by prayer, compared with 28% of others. Assume that the results of...

What do you believe is a reasonable availability or utilization rate (the percentage of your time...

What do you believe is a reasonable availability or utilization rate (the percentage of your time that is charged to billable projects) is for a staff engineer one month after the engineer starts working for the company after just graduating from college? 6 Months? 1 Year? Explain the reasoning for your responses

A recent study of high school students shows the percentage of females and males who have...

A recent study of high school students shows the percentage of females and males who have at LEAST one notation in their school record for inappropriate behavior. A simple random sample of high school students was interviewed. The students were asked whether they had a notation for inappropriate behavior in their school record. Of the 100 females, 21 answered yes, as did 145 of the 400 males. Part A: Construct and interpret a 99% confidence interval for the difference in...

6. Research Question: Is there a higher percentage of Christians among CSU students than among USC...

6. Research Question: Is there a higher percentage of Christians among CSU students than among USC students? To test this I set up the hypothesis test H0 : pCSU = pUSC Ha : pCSU > pUSC This test gave a p-value of 0.023. (a) Give your conclusion in context for this test using α = 0.05. (Your conclusion should be written so that a lay person could understand.) (b) Give your conclusion in context for this test using α =...

There are 398 students currently enrolled in a statistics course at your school. You wish to...

There are 398 students currently enrolled in a statistics course at your school. You wish to form a sample of 4 students to answer some survey questions. Select the students who will belong to the simple random sample by using the randomly generated number table below by starting in the fourth row and first column. 35931 89035 23653 46370 28433 62632 81258 40557 19325 43161 28330 34629 79010 22483 95383 12441 20033 11802 03263 75380 Please let me know what...

Subjects