Question

In: Statistics and Probability

A researcher claims that more than 30 percent of students of WPU use reading glasses. A...

A researcher claims that more than 30 percent of students of WPU use reading glasses. A consumer agency wants to test this claim. The agency takes a random sample of 120 students and finds that 60 of them use reading glasses. If the agency conducts hypothesis testing, which would be the computed p-value for the test?

4.7

4.8

0.2

0.7

None of the above

Solutions

Expert Solution

none of the above.

please like ??


Related Solutions

1.) A researcher claims that Americans use more consonants in their language than the vowels. To...
1.) A researcher claims that Americans use more consonants in their language than the vowels. To test this claim, researcher randomly selects 26 English words (please randomly generate these English words by yourself and explicitly state them in your homework as your sample). Based on this sample; a) State your hypothesis H0 and H1 claiming that Americans use more consonants in their language. b) State the decision rule, sample statistics, table value and test statistic in the same order as...
A business students claims that on average an MBA students is required to prepare more than...
A business students claims that on average an MBA students is required to prepare more than five cases per week. To examine the claim, a statistics professor ask a random sample of ten MBA students to report the number of cases they prepare weekly. The results are given below. Can the professor conclude that the claim is true, at the .05 level of significance, assuming the number of cases is normally distributed with a standard deviation of 1.5? 2 7...
A researcher claims that New Zealanders spend more time exercising than Australians. The researcher takes a...
A researcher claims that New Zealanders spend more time exercising than Australians. The researcher takes a random sample of 41 New Zealanders and finds that they spend an average of 130 minutes per day exercising, with a standard deviation of 24. A sample of 61 Australians averaged 110 minutes a day of exercise, with a standard deviation of 16. Assuming equal variances, test the claim that New Zealanders exercise more than Australians at the 0.05 significance level. Assuming unequal variances,...
A researcher claims that more than 55% of adults believe it is very likely that life...
A researcher claims that more than 55% of adults believe it is very likely that life exists on other planets. In a survey of 1000 adults, 585 say it is very likely that life exists on other planets. At α = 0.05, can you support the researcher’s claim?
(a) A researcher wishes to prove that more than 75% of undergraduate students at the Mcgill...
(a) A researcher wishes to prove that more than 75% of undergraduate students at the Mcgill University read McGill's student newspaper regularly. If 80% of all McGill students read the newspaper regularly, what is the probability that with a random sample of 227 students, the researcher ends up with insufficient evidence to reject the null hypothesis at the 1% significance level? In other words, what is the probability that the researcher makes a Type II error? Answer with hypotheses in...
8. A researcher claims that more than 35% of U.S. adults have been a victim to...
8. A researcher claims that more than 35% of U.S. adults have been a victim to identity theft. In a random sample of 490 U.S. adults, 192 of them have been a victim to identity theft. a) Is there enough evidence to support the researchers claim at the 1% level of significance? b) Is there enough evidence to support the claim at the 10% level of significance?
A researcher claims that the stomachs of blue crabs from Location A contain more fish than...
A researcher claims that the stomachs of blue crabs from Location A contain more fish than the stomachs of blue crabs from Location B. The stomach contents of a sample of 14 blue crabs from Location A contain a mean of 199 milligrams of fish and a standard deviation of 36 milligrams. The stomach contents of a sample of 7 blue crabs from Location B contain a mean of 183 milligrams of fish and a standard deviation of 43 milligrams....
A researcher is interested in determining if the more than two thirds of students would support...
A researcher is interested in determining if the more than two thirds of students would support making the Tuesday before Thanksgiving a holiday. The researcher asks 1,000 random selected students if they would support making the Tuesday before Thanksgiving a holiday. Seven hundred students said that they would support the extra holiday. Define the parameter. a. p = the population proportion of UF students who would support making the Tuesday before Thanksgiving break a holiday. b. phat = the sample...
A researcher hypothesizes college students will be more extroverted than the population mean for extroversion and...
A researcher hypothesizes college students will be more extroverted than the population mean for extroversion and collects n = 177 students. The researcher performs a one-tail z test with alpha set to 0.05 and finds a sample z score is 2.44, showing evidence for the researcher's predictions. What is the probability (as % or proportion) the researcher made a type 1 error? b. A researcher hypothesizes that coffee drinkers and non coffee drinkers will have different incidences of clinical anxiety....
A medical school claims that more than 28% of its students plan to go into general...
A medical school claims that more than 28% of its students plan to go into general practice. It is found that among a random sample of 130 of the school's students, 33% of them plan to go into general practice. Using a 0.05 significance level, test the claim that more than 28% of the medical school’s students plan to go into general practice. a) Write the null and alternative hypotheses. b) Determine the P-value. c) Should you Reject H0 or...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT