A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of 15 mature female pink seaperch collected fall has a mean length of 115 millimeters and a standard deviation of 11 millimeters. A sample of 8 mature female pink seaperch collected in winter has a mean length of 106 millimeters and a standard deviation of 9 millimeters. At a = 0.02, can you support the marine biologist's claim? Assume the population variances are equal. Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. OC. "The mean length of mature female pink seaperch is different in fall and winter." O D. "The mean length of mature female pink seaperch is the same in fall and winter." What are Ho and Ha? The null hypothesis, Ho, is u1 = H2. The alternative hypothesis, Ha, is H1 #H2- Which hypothesis is the claim? The alternative hypothesis, Ha The null hypothesis, Ho (b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. ore as needed)

A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of 15 mature female pink seaperch collected fall has a mean length of 115 millimeters and a standard deviation of 11 millimeters. A sample of 8 mature female pink seaperch collected in winter has a mean length of 106 millimeters and a standard deviation of 9 millimeters. At a = 0.02, can you support the marine biologist's claim? Assume the population variances are equal. Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. OC. "The mean length of mature female pink seaperch is different in fall and winter." O D. "The mean length of mature female pink seaperch is the same in fall and winter." What are Ho and Ha? The null hypothesis, Ho, is u1 = H2. The alternative hypothesis, Ha, is H1 #H2- Which hypothesis is the claim? The alternative hypothesis, Ha The null hypothesis, Ho (b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. ore as needed)

Name: A marine biologist claims that the mean length of mature female pink
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of 15 mature female pink seaperch collectedfall has a mean length of 115 millimeters and a standard deviation of 11 millimeters.

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

The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one school year. The speed limit on that part of Reynolds Rd is 20 mph. The mean of the speed readings was 24.19 mph, with a standard deviation of 3.56 mph.
A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of 18 mature female pink seaperch collected in fall has a mean length of 111 millimeters and a standard deviation of 11 milimeters. A sample of 8 mature female pink seaperch collected in winter has a an length of 107 millimeters and a standard deviation of 12 millimeters. At a= 0.20, can y you support the marine biologist's claim? Assume population variances are equal. Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. (a) Identify the claim and state Hg and H. Which is the correct claim below? O A. "The mean length of mature female pink seaperch is greater in the winter than in the fall" O B. "The mean length of mature female pink seaperch is different in fall and winter." OC. "The mean length of mature female pink seaperch is greater in the fall than in the winter." OD. "The mean length…
Ann thinks that there is a difference in quality of life between rural and urban living. She collects information from obituaries in newspapers from urban and rural towns in Idaho to see if there is a difference in life expectancy. A sample of 3 people from rural towns give a life expectancy of xr¯=79��¯=79 years with a standard deviation of sr=7.57��=7.57 years. A sample of 14 people from larger towns give xu¯=82��¯=82 years and su=5.48��=5.48 years. Does this provide evidence that people living in rural Idaho communities have different life expectancy than those in more urban communities? Use a 5% level of significance. (a) State the null and alternative hypotheses: (Type ‘‘mu_r′′‘‘��_�″ for the symbol μr�� , e.g. mu_rnot=mu_u��_��=��_� for the means are not equal, mu_r>mu_u��_�>��_� for the rural mean is larger, mu_r<mu_u��_�<��_� , for the rural mean is smaller. )H0�0 = equation editor Equation Editor Ha�� = equation editor Equation Editor (b) The degree of…
According to the historical data, the life expectancy in Belgium is less than the life expectancy in the United States. A new study has been made to see whether this has changed. Records of 260 individuals from Belgium who died recently are selected at random. The 260 individuals lived a mean of 78.4 years with a standard deviation of 8.8 years. Records of 285 individuals from the United States who died recently are selected at random and independently. The 285 Individuals lived a mean of 76.5 years with a standard deviation of 7.4 years. Assume that the population standard deviations of lifetimes in these two countries can be estimated by the sample standard deviations, as the samples used were quite large. Construct a 95% confidence interval for ₁-₂, the difference between the life expectancy μ₁ in Belgium and the life expectancy μ₂ in the United States. Then find the lower limit and upper limit of the 95% confidence interval. Carry your intermediate computations to at least three…
The mean score on a driving exam for a group of driver's education students is 6868 points, with a standard deviation of 55 points. Apply Chebychev's Theorem to the data using kequals=22. Interpret the results
marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. À sample of 17 mature female pink seaperch collected in Il has a mean length of 111 millimeters and a standard deviation of 10 millimeters. A sample of 8 mature female pink seaperch collected in winter has a mean length E 98 millimeters and a standard deviation of 12 millimeters. At a = 0.10, can you support the marine biologist's claim? Assume the population variances are equal. ssume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. - 1.714,1.714 (Type an integer or decimal rounded to three decimal places as neded. Use a comma to separate answers as needed.) Select the correct rejection region(s) below. O A. -to to O D. t>to (c) Find the standardized test statistic. t3= =| (Type an integer or decimal…
An old medical textbook states that the mean sodium level for healthy adults is 140 mEq per liter of blood. A medical researcher believes that, because of modern dietary habits, the mean sodium level for healthy adults, u, now differs from that given in the textbook. A random sample of 23 healthy adults is evaluated. The mean sodium level for the sample is 147 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 14 mEq. Assume that the population is normally distributed. Can we conclude, at the 0.10 level of significance, that the population mean adult sodium level differs from that given in the textbook? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H₁. H₂:0 H₁ :0 (b) Determine the type of test statistic to…
A manufacturer of bolts has a quality control policy that requires it to destroy any bolts that are more than 2 standard deviations from the mean. The quality control engineer knows that the bolts coming off the assembly line have a mean length of 8cm with a standard deviation of 0.05 cm. For what length will a bolt be destroyed?
A researcher believes the mean weight of males sulcata tortoises is more than 205 pounds. She samples 18 males sulcatas and find their mean to be 216.2 pounds with a standard deviation of 13.5pounds. Find the p-value p =
A local community college reported that the average SAT score of its students is 960 with a standard deviation of 82. If a student scored 975 on the SAT, what is the student's z score? Did the student do better or worse on the SAT compared to the average student in the college?
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of the age when smokers first start to smoke remains constant at around 2.1 years. The American Lung Association claims that the mean age when smokers first start to smoke is at least 17. A survey of 40 randomly selected smokers of this generation was done and it was found that the mean age when smokers first started to smoke was 18.1. Is there enough evidence to reject the claim? Describe what a Type I error is for this situation. Describe what a Type II error is for this situation.
Suppose the distribution of heights of a group of 300 children is normal, with a mean of 150 centimeters and a standard deviation of 12 centimeters. About how many of these children are taller than 162 centimeters? children