what is test statistics round to 2dppvalue round to 4dpconclusion at alpha= 0.05 ay from TechnologyHypothesis test results:u: Mean of variableHo : H= 2.7HA: > 2.7Variable Sample MeanLengthStd. Err.DFT-Stat-value3.26148 0.213315 399 2.6321640.0044PrintDone

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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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You are conducting a study to see if the proportion of men over 50 who regularly have their prostate examined is significantly more than 0.49. Thus you are performing a right-tailed test. Your sample data produce the test statistic z=2.046z=2.046. Find the p-value accurate to 4 decimal places.p-value =
Only 13% of registered voters voted in the last election. Will voter participation decline for the upcoming election? Of the 348 randomly selected registered voters surveyed, 28 of them will vote in the upcoming election. What can be concluded at the αα = 0.10 level of significance? The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should the null hypothesis.
Suppose that 0.63 of all adults own a car. Random samples of adults are taken and the proportion of each sample that owns a car was found.31.21% of all sample proportions were greater than 0.6937. What is σp^? σp^=
159.3 was wrong
No idea how to solve this, all help is appreciated, thanks!
The Center for Disease Control reports that from 1999 - 2011 in the United States the number of deaths related to exposure to excessive natural cold has an average of 1231 deaths per year with a standard deviation of 140 deaths. If we sample the next 64 years and get an average of 1192 deaths, will we have enough evidence to say the death rate from hypothermia is getting lower? Show all 7 steps of a hypothesis. (alpha is 0.05)
A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less than 35,000 miles. To check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 34,200 miles with a standard deviation of 1200 miles. At α = 0.05, test the shipping firm's claim. Round the test statistic to the nearest thousandth.
19) You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly more than 0.53. Thus you are performing a right-tailed test. Your sample data produce the test statistic z=2.399z=2.399. Find the p-value accurate to 4 decimal places.p-value =
Currently patrons at the library speak at an average of 61 decibels. Will this average decline after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 57 people speaking at the library. Their average decibel level was 58 and their standard deviation was 10. What can be concluded at the the αα = 0.10 level of significance? For this study, we should use t-test for population mean The null and alternative hypotheses would be: H0:H0: Incorrect >, <, = or not equal to also provide the __?__ H1:H1: Incorrect >,<, = or not equal to also provide the __?__ The test statistic tc =(please show your answer to 3 decimal places.) The p-value = __?__ (Please show your answer to 4 decimal places.) e.Thus, the final conclusion is that .. a. The data suggest the populaton mean has significantly decreased from 61 at αα = 0.10, so there is statistically significant evidence…
A pre-test of statistical knowledge among college freshmen has a μ = 40 points. After completing a stats course, a sample of N = 5 students takes the test and receives these grades: 34, 45, 72, 66, 83• Using a 2-tailed test with α = 0.05, did the students improve significantlyafter completing the course?
Are freshmen psychology majors less likely to change their major before they graduate compared to freshmen business majors? 454 of the 687 freshmen psychology majors from a recent study changed their major before they graduated and 439 of the 619 freshmen business majors changed their major before they graduated. What can be concluded at the = 0.05 level of significance? The test statistic z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)
A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is lessthan 38,500 miles. To check the claim, the firm randomly selects and tests 28 of these tires and gets a mean lifetime of 37,550 miles with a standard deviation of 1250 miles. At α = 0.02, test the shipping firm's claim. Round the test statistic to the nearest thousandth.

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