Instructor-created questionQuestion Help ▼Researchers measured bones from a species of fish from different time periods in an attermpt to determine whether changes occurred. Results are given below.Assume that both samples are independent simple randorm samples from populations having normal distributions. Use a 0.05 significance level to test the claim thatthe variation in bone size has changed in the last million years.131.76 mm136.84 mm5.11 mmprehistoricmodern31315.38 mmWhat are the null and alternative hypotheses?O A. Ho: of t03O B. Ho: of =03H1: of nstructor-created questionQuestion Help vResearchers measured bones from a species of fish from different time periods in an atteript to determine whether changes occurred. Results are given below.Assume that both samples are independent simple random samples from populations having normal distributions. Use a 0.05 significance level to test the claim thatthe variation in bone size has changed in the last million years.131.76 mm5.11 mmprehistoricmodern3131136.84 mm5.38 mmH: of 203Use the F-table to find the upper critical value.|(Round to four decimal places as needed.)Identify the test statistic.F=(Round to four decimal places as needed.)Does the sample provide sufficient evidence that the variance in the bone size for this speciesof fish changed in the last million years?Answer yes or no:Click to select your answer(s) and then click Check Answer.Check AnswerClear AllAll parts showing

Given n1=31n2=31x¯1=131.76x¯2=136.84s1=5.11s2=5.38α=0.05

Answered: What are the null and alternative…

Math

Statistics

What are the null and alternative hypotheses? O A. Ho: o t03 H: of =0} O B. Ho: of =03 H1: of

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Approximately one-third of Canadians have some form of privately-covered long-term disability insurance. If random groups of 165 Canadians are sampled, find the range of values that the middle 95% of the sample proportions of those with long-term disability health insurance are likely to fall. = ? < p̂ < ? Round to four decimal places if necessary Enter 0 if normal approximation cannot be used
In two towns A and B, the following information was supplied by an investigator. Total population (in thousands ) Literates Ililerate criminals Literate criminals Town A 240 40 40 Town B 234 34 20 (.) („) Compare the degree of association between literacy and crime in each of the two towns.
The mean salary of federal government employees on the General Schedule is $59,593. The average salary of 34 state employees who do similar work is $59,410 with =σ $1500 . At the 0.10 level of significance, can it be concluded that state employees earn on average less than federal employees? Find the critical value(s). Round the answer to at least two decimal places. If there is more than one critical value, separate them with commas.
O Assighmant Score! < Question 12 of 16 Of the many species of oak trees in the United States, 28 grow on the Atlantic Coast and 11 grow in California. The back-to-back stemplot displays data on the average volume of acorns (in cubic centimeters) for these 39 oak species. Atlantie Const 998643 0 | Callifornia Which of the following are correct comparisons of the 4. 88864211111 1 50 2 6640 3 06 06 distributions of acorn volumes for the Atlantic Coast and California? 8 4 1 5 86 I. Both distributions have similar variability. II. Both distributions have similar medians. 59 1 8 1 9 10 11 III. Both distributions have possible outliers. O I and III only Key: 26 = An oak species whose acorn volume is 2.6 cm. O II and III only 15 16 17 O II only O I only O III only 1 From the Electronic Encyclopedia of Statistics Examples and Exercises (EESEE) story "Acorn Size and Oak Tree Range."
You are If a = performing a right-tailed z-test .10, find the critical value, to four decimal places.
Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. The manufacturer of a refrigerator system for beer kegs produces refrigerators that are supposed to maintain a true mean temperature, . of 48"F, ideal for a certain type of German piluner The owner of the hrewery does not agree wth the refrigerator manufacturer, and claims he can prove that the true mean temperature is incorrect. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusaon in nontechnical terms. O There is sufficient evidence to support the claim that the mean temperature is different from 4S'F. There is sufficient evidence to support the claim that the mean temperature is equal to 45F. O There is not sufficient evidence to support the claim that the mean temperature is equal to 45'F. O There is not sufficient evidence to support the claim that the mean temperature is different from 48°F.
Stoaches are fictional creatures, sometimes mistaken for mome raths. Suppose a two-tailed t-test is conducted to test for a difference between the population means of adult female stoach weights and adult male stoach weights. The female sample has 13 weights, and the male sample has 7 weights. The t-statistic for the test is -0.20542. What is the p-value? (Give your answer to 4 decimal places.) p-value:
3.1 Suppose X ~ N(18, 7). What value of x has a z-score of -2.16? Round to 2 decimal places..
I am confused. I do not understand how they got 0.0681 when using the standard normal Z table for 1.49. According to my table, that is for -1.49, and positive 1.49 has a z-score of 0.9319. Using the normalcdf function on my calculator, I can only get that result if I set 1.49 as my lower bounds and 10^99 as my upper bounds. Is this question asking for a right or left area? I thought the area to the left was supposed to be negative.
Use the information given in the table below to find a 95% Prediction Interval for y when x = 10. n = 20 x_bar = 15 %3D beta0_hat = 53 SSXX = 62 beta1_hat = - 4.5 S = 9 (- 14.79, 30.79) (-0.57, 16.57) (-10.25, 26.25) O (- 4.73, 20.73)