Question

In: Statistics and Probability

A random sample of 400 female students revealed that 120 liked to study at the library....

A random sample of 400 female students revealed that 120 liked to study at the library. Similarly, a random sample of 600 male students revealed that 150 liked to study at the library. At the 0.05 significance level, is there a significant difference in the proportion of female and male who like to study at the library?

Please show calculation on paper. thank you.

Solutions

Expert Solution


Related Solutions

A random sample of 245 students showed that 189 of them liked listening to music while...
A random sample of 245 students showed that 189 of them liked listening to music while studying. Find the 90% confidence interval for the proportion of students that like listening to music while studying. What is the SE (standard error) for this sample?
A random sample with 150 students has 45 female students. Estimate the population proportion of female...
A random sample with 150 students has 45 female students. Estimate the population proportion of female students at the 99% level of confidence. a. Find the right boundary of the estimation? b. Find the margin of error.
A random sample of 400 families who planned to buy a vacation residence revealed that 250...
A random sample of 400 families who planned to buy a vacation residence revealed that 250 families want to buy a condominium in Florida. The previous study shows that 55% of those families who plan to purchase a vacation residence in Florida want a condominium. Required: Can we conclude that there are more than 55% families who will buy the condominium in Florida, state your decision in terms of the null hypothesis. Use a 0.01 level of significance.                                                      Calculate...
Suppose there are 54% female students on CMU campus. A random sample of 100 students was...
Suppose there are 54% female students on CMU campus. A random sample of 100 students was obtained. What is the probability there will be equal to or more than 58 female students?
1. A random sample of 120 ULS students yields a mean GPA of 2.71 with a...
1. A random sample of 120 ULS students yields a mean GPA of 2.71 with a sample standard deviation of 0.51. Construct a 95% confidence interval for the true mean GPA of all students at ULS. Find the minimum sample size required to estimate the true mean GPA at ULS to within 0.03 using a 95% confidence interval 2. Suppose we have 3 ULS student candidates running for the position of student representative, A, B, and C. We randomly select...
For a random sample of 400 students at Aggie University, 10 are vegetarians. test the claim...
For a random sample of 400 students at Aggie University, 10 are vegetarians. test the claim that the proportion of vegetarians at the university differs from 4%. Use 0.10 as the significance level. Группа выборов ответов p-value=0.126, evidence not support claim p-value=0.000, evidence support claim p-value=0.250, evidence not support claim p-value=0.025, evidence support claim p-value=1.000, evidence not support claim
A random sample of 75 students revealed 0.25 had acquired an internship for summer 2020 before...
A random sample of 75 students revealed 0.25 had acquired an internship for summer 2020 before February 2020. If an associated confidence interval started at 0.152 and ended at 0.348, what was the level of confidence? Group of answer choices a) 90 b)80 c)99 d)95 For a t distribution with n = 19, find the probability for the following region: To the left of +2.5524 a)0.51 b)0.49 c)0.99 d)0.91
Descriptive analysis revealed that 68% of students passed Test 1. Suppose a random sample of 18...
Descriptive analysis revealed that 68% of students passed Test 1. Suppose a random sample of 18 students is selected and defined ˆp as the proportion of students in the sample who passed Test 1. Determine the mean of the sampling distribution of ˆp. μˆp= Determine the standard deviation of the sampling distribution of ˆp. Round the solution to six decimal places. σˆp= Determine the probability that between 63.3% and 77.3% of a random sample of 18 students passed Test 3....
In a secondary school, there are 400 male students and 600 female students. 50% of the...
In a secondary school, there are 400 male students and 600 female students. 50% of the male students and 55% of the female students are in senior secondary curriculum, the others are in junior secondary curriculum. The school had appointed 8% of senior male students and 10% of senior female students to be the student leaders. No junior secondary student can be student leader. (a) If a student is selected at random in the school, find the probability that (i)...
The student body of an organization consits of 60% female students. A random sample of 5...
The student body of an organization consits of 60% female students. A random sample of 5 students is selected. 1. Using the formula for binomial probability distribution, calculate the probability tjat among the students in the sample at least 2 are female. 2. Using the correct tables for binomial probability distribution, calculate the probability that among the students in the sample at least 3 are females.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT