4. Given are x = 35, µ = 38, s = 10, n = 20, Determine the statistical test tobe used.ールTest Statistic: Z ="Test Statistic: t =A.В.5. Given are x = 90, µ = 88, o = 6, n = 100. Find the value of z.A. 3.33B. - 3. 33

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Answered: 4. Given are x = 35, µ = 38, s = 10, n…

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 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, μ, now differs from that given in the textbook. A random sample of 60 healthy adults is evaluated. The mean sodium level for the sample is 144 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 14 mEq. 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. a. State the null hypothesis H0 and the the alternative hypothesis H1. b. Find the value of the test statistic. Round to three or more decimal places. c. Find the p-value. (Round to three or more decimal places.) d. Can we conclude that the population mean adult sodium level differs from that given in the textbook?
The graph of the annual snowfall distribution (in feet) for a particular county is shown below on the left with its mean and standard deviation. Assume that a sample size of 64 is drawn from the population. Determine which of the graphs labeled (a)-(c) would most closely resemble the sampling distribution of the sample means. Explain your reasoning. 0.16- P(x) o = 2.4 'u=4.4\ x 10 Snowfall (in feet) Choose the correct graph below. А. B. Oc. P(X) P() P(x) o- = 0.3 o- =2.4 H: =0.550 =4.4 Hi =44 o- =0.300 8 10 -2 -5-2 1 4 7 10 13 Clear all Final check Get more help - Rel. frequency
The FDA regulates that fish that are consumed should contain no more than 1.0 mg/kg of mercury. In Florida, bass fish were collected in 24 different lakes to measure the amount of mercury in the fish ('Multi- disciplinary niser activity, 2013). The data for the average amount of mercury in the fish from each lake is in table below. Average mercury level in a lake 0.71 0.15 0.17 0.63 0.43 1.08 0.27 0.5 0.19 1.20 0.94 0.87 0.48 0.44 0.98 0.59 0.28 0.49 1.16 0.25 1.23 0.77 0.73 0.65 For the data shown above, find the following. Round values 3 decimal place (s). Select the correct units for each statistic.
Unfortunately, arsenic occurs naturally in some ground water. A mean arsenic level of µ = 8 parts per billion (ppb) is considered safe for agricultural use. A well in Los Banos is used to water cotton crops. This well is tested on a regular basis for arsenic. A random sample of 37 tests gave a sample mean of - = 7.3 ppb arsenic. It is known that o = information indicate that the mean level of arsenic in this well is less than 8 ppb? Use the classical 1.9ppb for this type of data. Does this approach. Use a = 0.01 What is the criterion (step 3) for this problem? 2.33 or more 1.645 or more -2.33 or less -1.645 or less
Should there be a significant difference with this study, what post-hoc test shall be used? Dr. Hess has done work that suggests that emotional arousal affects pupil size. To ascertain if the type of arousal makes a difference, you decided to measure pupil size under three different arousal conditions (Neutral, Pleasant, Aversive). Each participant will look at all the different pictures that differ according to the condition. The pupil size after viewing each photograph is measured in millimeters. * t-Test paired two sample for means O t-Test assuming equal variances O t-Test assuming unequal variances
Assume a normally distributed population with a mean = 90 and standarddeviation = 12. Be sure to sketch the curves, include formulas & round appropriately. If you select one person at random from this population (M = 90, SD = 12)and find his/her score on this variable to be 68 would you be surprised/consider this score extreme (yes/no)? Why/why not? Be sure to show your work when justifying the answer.
appcoulasc.comy student/assessment/6260690bba413c0009752bcd/dass/62324bac98e2d6000916675a/uta/6260693c6087c00009746b15/ten Question 11/12 > NEXT A BOOKMARK Lee records the height of players on a basketball team, and calculates the mean absolute deviation of the set of data. What does the mean absolute deviation of the set of data describe? O the average height of a player on the team the height of the tallest player on the team the difference in height between the shortest and tallest player the average difference in height between each player and the mean height acer
The mean of a distribution is 15 and the standard deviation is 3. Use Chebyshev's Theorem and the formula 1 - 1 / (k ^ 2) to determine the minimum percentage of values that will fall between 9 and 21
The body weight of a healthy 3-month old colt should be about µ = test the claim that the weight of a wild Nevada colt (3-months old) is more than 60 kg. 60kg Suppose you want to State in words what a Type I Error is. State the mean weight of a wild Nevada (3-month old) colt is less than 60 Kg when in fact the mean weight of a wild Nevada colt (3-month old) is more than or equal to 60 kg. State the mean weight of a wild Nevada (3-month old) colt is more than 60 Kg when in fact the mean weight of a wild Nevada colt (3-month old) is less than or equal to 60 kg. State the mean weight of a wild Nevada (3-month old) colt is equal to 60 Kg when in fact the mean weight of a wild Nevada colt (3-month old) is not equal to 60 kg. State the mean weight of a wild Nevada (3-month old) colt is less than or equal to 60 Kg when in fact the mean weight of a wild Nevada colt (3-month old) is more than 60 kg.
The NTSB wants to estimate the difference between the average stopping distance for a car traveling 40 MPH on wet versus dry pavement. Ten vehicles were used for the study where each vehicle was driven at 40 MPH and came to a sudden stop on both wet pavement and dry pavement. The stopping distance was measured (feet) for each pavement condition and the data is shown below followed by Minitab output with the CI. Estimation for Paired Difference Mean StDev SE Mean 95% CI forμ_difference 34.700 2.452 0.775 (32.946, 36.454) b. What assumption is needed for this CI to be valid?
Can i get help with this problem? the sample proportion denoted phat is given by the formula phat(p-hat)=x/n where x s the number of individuals with a specified characteristic in a sample of n individuals. 1. find: phat(p-hat_ if the students poll surveyed 1200 people that vacation during the summer and asked if they plan to work while on vacation. Of those surveyed, 552 indicated that they plan to work on vacation. Find the sample proportion of individuals polled that plan to work on vacation. So, Students estimates that from the value of phat(p-hat) found above that ____________ or ________ % of adults who vacation plan to work on vacation,
The National Institute of Standards and Technology (NIST) publishes procedures for inspecting the advertised contents of packaged goods.!° The discussion of these procedures includes an example of inspecting the weights of a sample of packages of ground beef from a particular grocer. An SRS of 12 packages are weighed (in pounds) according to the NIST procedures. The table shows each of the actual weichts along with the weight listed on the package label.carry out the test to see if the mean difference in the measured weight minus the labels weight is less than 0 Table is available in the attached image.

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4. Given are x = 35, µ = 38, s = 10, n = 20, Determine the statistical test to %3D be used. x-u ール Test Statistic: Z =" Test Statistic: t = 4 A. В. 5. Given are x = 90, µ = 88, o = 6, n = 100. Find the value of z. А. 3.33 В. - 3. 33