Evaluate the following problem. Identify or formulate the followinga. Null hypothesisb. Alternative hypothesisc. AlphaII.d. Test statistics formulae. Decision and conclusion1. A random, sample of 46 adult coyotes in a region of northern Minnesota showed the average age to be2.05 years, with a sample standard deviation 0.82 years. However, it is thought that the overallpopulation mean age of coyotes is 1.75. Do the sample data indicate that coyotes in this region ofnorthern Minnesota tend to live longer than the average of 1.75 years? Use a =0.01.

The question is about hypothesis testing of a population mean. Given : A random sample of adults…

Answered: Evaluate the following problem.…

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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An online travel agent that specializes in cruises wanted to compare the cost of cruising to different destinations on various cruise lines. The following random sample data show the average cost of a seven-day cruise in a standard room to two locations. Assume the population variances for the cruise fares for these destinations are equal. Complete parts a through c. Location 2 $928 $128 11 Sample mean Sample standard deviation Sample size Location 1 $994 $135 8 C a. Construct a 98% confidence interval to estimate the difference between the average rates of cruising to location 1 vs. cruising to location 2. The 98% confidence interval is (.). (Round to two decimal places as needed.)
Part C. Compute the sample mean and sample deviation.
Consider the following set of data: Men (1) Women (2) Sample Size 100 80 Mean $12,850 $13,000 Standard Deviation $345 $500 To determine if the Men have a lower mean salary than the Women, we would test the following hypothesis A) H0: μ1 < μ2, Ha: μ1 ≥ μ2 B) H0: μ1 = μ2, Ha: μ1 ≠ μ2 C) H0: μ1 ≥ μ2, Ha: μ1 < μ2 D) H0: μ1 ≤ μ2, Ha: μ1 > μ2
When students use the bus from their dorms, they have an average commute time of 8.263 minutes with standard deviation 2.9321 minutes. Approximately 75.67% of students reported a commute time greater than how many minutes? Assume the distribution is approximately normal. Question 10 options: 1) 6.22 2) 2.28 3) 14.24 4) 10.3 5) We do not have enough information to calculate the value.
An article reports that blue eyed people earn less than brown eyed people, with these numbers: average blue-eyed salary 35,000, average brown-eyed salary $37,000, p-value 0.45. Based on that reported p-value, and using the common definition of statistical significance, "which is the case? A. The results are nowhere near to being statistically significant. B. The results are almost but not quite statistically significant. C. The results are just barely statistically significant. D. The results are strongly statistically significant.
2. The population standard deviation for the age of Fictional College students is 8.4 years. If we want to be 95% confident that the sample mean age is within one year of the true population mean age of Fictional College students, how many randomly selected Fictional College students must be surveyed?
2) Now read the following data into R. Use R for all statistical procedures. Use R studio for the test.Sample Sample A B0.7969 1.4731 1.2669 3.2137 1.5856 2.2486 0.4959 1.1156 0.5022 10.6207 0.5524 1.983510.3060 31.2243 0.6244 3.7984 1.9789 1.4710 1.6788 9.0351(a) Make q-q plots of both samples. (b) Perform a t-test (Welch's test). (c) Perform a MWU test. (d) Which test gave you the better p-value now? Why? (e) What is a “better” p-value? Why? (f) This is two sided - why?
For the sample data set from HW M0 Problem 1: (92, 97, 88, 91, 94, 94, 85, 93, 81, 85) perform the following calculations or operations with pencil and paper: 1. Estimate the standard deviation from the range using the d2 method2. Determine the quartiles.3. Calculate the IQR. 4.Calculate boxplot 5. Sketch a stem and leaf plot.
Consider a sample with data values of 57,45,50,39,50,59,60, and 48. Compute the following values a. Mode b. 40th percentile c. Variance d. Standard deviation e. Coefficient of variation
1. A population has a standard deviation of 24. Find the standard error for the following sample sizes: a. N=4 b. N=9 c. N = 16 CLO F2 0 F3 Q F4 112 ů F5 FEB 27 N MacBook Air F6 F7 D
The data below show sport preference and age of participant from a random sample of members of a sports club. Is there evidence to suggest that they are related? Frequencies of Sport Preference and Age Swimming 85 ATTI Tennis Basketball 18-25 98 88 26-30 104 100 46 31-40 62 63 40 54 30 Over 40 63 What can be concluded at the = 0.10 significance level? a. What is the correct statistical test to use? O Homogeneity O Paired t-test O Goodness-of-Fit O Independence b. What are the null and alternative hypotheses? Ho: O The age distribution is the same for each sport. The age distribution is not the same for each sport. O Age and sport preference are dependent. O Age and sport preference are independent. H1: O Age and sport preference are independent. O The age distribution is not the same for each sport. O Age and sport preference are dependent. O The age distribution is the same for each sport.

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