A researcher claims that thenumber of homicide crimes byseason is uniformly distributed. Totest this claim, you randomly select1,199 homicides from a recent yearand record the season when eachhappened. The table shows theresults. At α = 0.05, testthe researcher's claim.Which hypothesis is the claim?НоHaCalculate the test statistic.Determine the P-value.SeasonSpringSummerFallWinterx² = .950 (Round to three decimal places as needed.)Frequency, f305310296288Clear allP-value= .813 (Round to three decimal places as needed.)Decide whether to reject or fail to reject the null hypothesis andinterpret the decision in the context of the original claim.nHo. Thereenough evidence at the 5% level ofsignificance to reject the claim that the distribution of the number ofhomicide crimes by seasonCheck answer

Null hypothesis: The number of homicide crimes by season is uniformly distributed (Claim).…

Answered: A researcher claims that the number 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

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Test the claim that 73% of women shoppers remained loyal to their favorite supermarket in the last year. In a random sample of 610 women shoppers, 417 remained loyal to their favorite supermarket last year. Use α=0.01.
Spg
At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and moving sand determines the shape and location of large dunes. At a test site, the prevailing direction of the wind did not change noticeably. However, the velocity did change. Sixty-three wind speed readings gave an average velocity of x = 1075 cm/sec. Based on long-term experience, ? can be assumed to be 255 cm/sec.
At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and moving sand determines the shape and location of large dunes. At a test site, the prevailing direction of the wind did not change noticeably. However, the velocity did change. Sixty-five wind speed readings gave an average velocity of x = 1075 cm/sec. Based on long-term experience, ? can be assumed to be 255 cm/sec. (a) Find a 95% confidence interval for the population mean wind speed at this site. (Round your answers to the nearest whole number.) lower limit ______cm/sec upper limit _____cm/sec
Pi- P2 Z. = %3D SE Suppose a drug company is developing a vaccine, designed to protect against a particular virus. The company states that the vaccine will be equally effective for men and women. In its initial stage, a researcher selects a random sample of 200 men and 100 women independently. At the end of the study, 15 of the men and 10 of the women showed symptoms of the virus after taking the vaccine. Is there enough evidence to conclude that there is a significant difference in the proportions of men and women who show symptoms of the virus after taking the vaccine? (a) State the appropriate hypotheses to answer this question. (b) Compute the test-statistic. (c) (i) Calculate the p-value. (ii) Interpret the p-value you have found. (d) State your conclusion in context of the situation. Page 1 135
#10).
A random selection of volunteers at a research institute have been exposed to a typical cold virus. After they started to have cold symptoms, 15 of them were given multivitamin tablets formulated to fight cold symptoms. The remaining 15 volunteers were given placebo tablets. For each individual, the length of time taken to recover from the cold is recorded. At the end of the experiment the following data are obtained. Days to recover from a cold Treated with multivitamin Treated with placebo 3.0, 5.6, 1.5, 6.8, 3.8, 7.5, 5.8, 4.6, 2.4, 5.0, 7.5, 5.0, 2.6, 1.7, 6.7 4.9, 6.1, 4.9, 4.2, 3.4, 5.5, 5.6, 3.4, 7.9, 6.8, 4.8, 4.2, 5.7, 2.2, 4.0 Send data to Excel Send data to calculator It is known that the population standard deviation of recovery time from a cold is 1.8 days when treated with multivitamin tablets, and the population standard deviation of recovery time from a cold is 1.5 days when treated with placebo tablets. It is also known that both populations are approximately normally…
Find the two-tailed U-table value when n1 = 5, n2 = 6, and alpha = 0.05.
question 8
Give answer from the choice and explain it as given in image. Note:hand written solution not allowed.

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A researcher claims that the number of homicide crimes by season is uniformly distributed. To test this claim, you randomly select 1,199 homicides from a recent year and record the season when each happened. The table shows the results. At α = 0.05, test the researcher's claim.