Question 5"At a certain college, it is estimated that about 37% of thestudents have cars on campus, and with this number, theparking lot is fully occupied. Would you suggest toincrease the parking lot space if, in a random sample of 48college students, 24 are found to have cars? Use 0.01 levelof significance."AThere is sufficent evidence to say that there is aneed to increase the parking lot space.It is safe to assume that the parking lot isenoughC) "Certainly, the parking lot is enough."BD) No sufficient data to make a conclusion.

Suppose p is the true population proportion of students who have cars on campus.

Answered: "At a certain college, it is estimated…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A real estate agent compares the selling prices of randomly selected homes in two municipalities in southwestern Pennsylvania to see if there is a difference. The results of the study are shown. Is there enough evidence to reject the claim that the average cost of a home in both locations is the same? Use the 0.01 level of significance. Scott X-bar 1= $93,430 01= $5602 n1= 35 Ligonier X-bar 2= $98,043 02= $4731 n2= 40 What is the appropriate alternate hypothesis? Find the critical Value Compute the test value Make the decision Summarize the Results
The mayoral challenger claims that less than 30% of residents over the age of 25 have bachelor’s degrees in our city. To test this claim, you survey 80 adults over the age of 25 and find only 18 possess bachelor’s degrees. At the 5% level of significance, is there enough evidence to SUPPORT the challenger’s claim? Null: Ho alternative:Ha (use u for mean and p for proportion)
help me fix a please !!
A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would hurt working-class people the most, since they commute the farthest to work. Suppose that the group randomly surveyed 24 individuals and asked them their daily one-way commuting mileage. The results are below. Using a 5% significance level, test the hypothesis that the three mean commuting mileages are the same. (Let 1 = Working-class, 2 = Professional (middle incomes), and 3 = Professional (wealthy).) Part (a) Part (b) Part (c) Part (d) Part (e) Part (f) Working-class 18.1 27.5 49.7 10.1 65.8 47.2 20.1 51.8 Professional (middle incomes) 17.0 17.5 22.7 7.6 10.2 2.9 7.3 14.5 What is the test statistic? (Round your answer to two decimal places.) Part (g) What is the p-value? (Round your answer to four decimal places.) Professional (wealthy) 9.1 7.2 4.9 12.8 11.6 29.0 16.3 9.5
At 5% significance level, state the hypotheses and test whether there is a relationship between marital status and work shift.
E Tnfanticide an ove... In a certain school district, it was observed that 25% of the students in the element schools were classified as only children (no siblings). However, in the special program for talented and gifted children, 107 out of 336 students are only children. The school district administrators want to know if the proportion of only children in the special program is significantly different from the proportion for the school district. Test at the a 0.02 level of significance. What is the hypothesized population proportion for this test? (Report answer as a decimal accurate to 2 decimal places. Do not report using the percent symbol.) Based on the statement of this problem, how many tails would this hypothesis test have? O one-tailed test O two-tailed test Choose the correct pair of hypotheses for this situation: (A) (B) (C) Ho:p = 0.25 H:p 0.25 0.25 (D) (E) (F) 0.318 Ho:p Ha:p < 0.318 H:p# 0.318 Ha:p Ho:P 0.318 Ho:p 0.318 0.318 (A) (B) (C) (D) (E) (F) Using the normal…
E NOLI Researchers conducted two surveys about teens are their use of social media. The first survey asked a random sample of 800 U.S. teens about their use of Instagram. A second survey asked the same questions to a random sample of 2253 Canadian teens. In these two studies, 73% of U.S. teens and 88% of Canadian teens said that they use Instagram. Use these results to answer the following questions about the proportion of U.S. and Canadian teens that use Instagram. Is there a statistically significant difference between the use of social media by U.S. teens and Canadian teens? No, there is no difference between the proportion of U.S. teens that use Instagram and the proportion of Canadian teens that use Instagram because both the lower limit and the upper limit of the confidence interval are negative values. Yes, the proportion of U.S. teens that use Instagram is significantly less than the proportion of Canadian teens that use Instagram difference because both the lower limit and the…
Past surveys showed that 44.2% of Filipino households have pets. A recent survey reported that 516 of the 1200 Filipino households have pets. Does this indicate that the proportion of Filipino households who have pets has decreased? Use a 5% level of significance. A. Perform a complete test of hypothesis. B. Select here the conclusion for this test of hypothesis. The proportion of Filipino households who have pets has decreased. There is no sufficient evidence to say that the proportion of Filipino households who have pets has decreased.
Violent crimes include rape, robbery, assault, and homicide. The following is a summary of the violent-crime rate (violent crimes per 100,000 population) for all states of a country in a certain year. Complete parts (a) through (d). Q1=273.8, Q2=388.5, Q3=529.1 (a) Provide an interpretation of these results. Choose the correct answer below. A. 25% of the states have a violent-crime rate that is 273.8 crimes per 100,000 population or less. 50% of the states have a violent-crime rate that is 388.5 crimes per 100,000 population or less. 75% of the states have a violent-crime rate that is 529.1 crimes per 100,000 population or less. B. 25% of the states have a violent-crime rate that is 273.8 crimes per 100,000 population or more. 50% of the states have a violent-crime rate that is 388.5 crimes per 100,000 population or more. 75% of the states have a violent-crime rate that is 529.1 crimes per 100,000 population or more. C. 75% of the…
Violent crimes include rape, robbery, assault, and homicide. The following is a summary of the violent-crime rate (violent crimes per 100,000 population) for all states of a country in a certain year. Q, =273.8, Q2 = 387.4, Q3 = 529.7 Provide an interpretation of these results. Choose the correct answer below. O A. 75% of the states have a violent-crime rate that is 273.8 crimes per 100.000 population or less. 50% of the states have a violent-crime rate that is 387.4 crimes per 100,000 population or less. 25% of the states have a violent-crime rate that is 529.7 crimes per 100,000 population or less. O B. 25% of the states have a violent-crime rate that is 273.8 crimes per 100.000 population or less. 50% of the states have a violent-crime rate that is 387 4 crimes per 100,000 population or less. 75% of the states have a violent-crime rate that is 529.7 crimes per 100,000 population or less Go to net page O C. 25% of the states have a violent-crime rate that is 273,8 crimes per 100,000…
Q: An online bookseller is considering selling an e-reader but will do so only if they have evidence that the proportion of customers who will likely purchase one is more than 0.4. Of a survey of 25 customers, 8 of them stated that they would likely purchase an e-reader. What should the bookseller do? Use a 5% significance level.
The percent of the population that is left-handed has historically been 10%. In a random sample of n=500 people there are 58 that are left-handed. The researcher would like to test the hypothesis that the percent of the population that is left-handed has increased. Determine the value of the test statistic

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