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.)
It is a claim about a population characteristic that is initially assumed to be true. A. Alternative hypothesis B. Null hypothesis C. One-tailed Test D. Two-tailed Test
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.
1. In each of the following parts, state the statistical analysis technique or approach that youwould use and give reasons for choosing that analysis. No calculations are required.a. Upper Hill Medical Services would like to know not just whether patients have high bloodpressure, but also what influences having high blood pressure. The Institute of Diabetes andKidney Diseases conducted a study on 2,768 adult females. The following variables wererecorded number of times pregnant, plasma glucose concentration a 2 hours in an oral glucosetolerance test, diastolic blood pressure (mm hg), triceps skin fold thickness (mm), 2-hour seruminsulin (mu u/ml), body mass index (weight in kg/(height in m2)), diabetes pedigree function,age (years) and a test whether the patient shows signs of diabetes (coded 0 if negative, 1 ifpositive).b. Arodi and Company based in Mombasa Kenya is an online t-shirt sales company investedin Google AdWords advertising as follows KSh 1 million, KSh 1.5 million and KSh…
Engineers are interested in comparing the mean hydrogen production rates per day for three different heliostat sizes. From the past week’s records, the engineers obtained the amount of hydrogen produced per day for each of the three heliostat sizes. Then they computed and compared the sample means, which showed that the mean production rate per day increased with the heliostat sizes. a. Identify the type of the study describe here. b. Discuss the type of interference that can and cannot be drawn from this study.
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

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