Real Shots Made vs. Goals Score XAns Key to Study Guide for MT 2 Xf004ba86b3b6e78004f/MyFiles/Downloads/MT%202-1.pdf1 / 4100%facility on Friday nights is 350 people. But for the last 20 Friday nights, the dataproduced a mean crowd size of 345 with a sample standard deviation of 3.5. Atthe 0.05 significance level, can we conclude that the mean crowd size on Fridaynights at the restaurant is less than 350?Section Two: Computing Areas Under the Normal CurvePlease draw a sèparate diagram for each lettered problem asdemonstrated in class.Info.: The mean one-way commute to work in New York City is 35.2 minutes. The distributionof the commutes is normally distributed with a standard deviation of 7 minutes.What is the probability of randomly selecting one commute time and finding that:a). P (x < 25 mins)b). P (25 44 mins)

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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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Find the proportion of N.d. observations with a zz-score between z_1 =z1= -2.45 and z_2 =z2= 2.71. Give your answer to four decimal places.
Please see below. Note that I am only given one attempt at this and I believe that the answer I have may not be correct. In selecting the sample size to estimate the population proportion pp, if we have no knowledge of even the approximate value of the sample proportion p̂ p^, we:A. take two more samples and find the average of their p̂ p^B. let p̂ =0.95p^=0.95C. let p̂ =0.50p^=0.50D. take another sample and estimate p̂ p^ Under which of the following circumstances is it impossible to construct a confidence interval for the population mean?A. A normal population with a large sample and a known population variance.B. A normal population with a small sample and an unknown population variance.C. A non-normal population with a large sample and an unknown population variance.D. A non-normal population with a small sample and an unknown population variance.
draw 2 normal curves with the same mean and different standard deviations
The symbol σˆpσp^ represents the proportion of a sample of size n. True False
Also need to find the standardized test statistic, decide whether to reject or fail to reject, and interpret the decision in the context of the claim.
A study was conducted to examine how anxiety (measured on a metric scale) varies for people from different age groups (<18 years, 19 - 29 years, 30 - 39 years, 40+ years). It was hypothesised that people <18 years old would have the least anxiety of the four age groups. It was also hypothesised that people 40+ years old would have more anxiety than people 19-29 years old. Which of the following would be an appropriate statistical test to conduct, which addresses these hypotheses? Group of answer choices: Factorial ANOVA Multiple Regression Mixed ANOVA Single factor ANOVA Within Subjects ANOVA
Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected. Friday the 6th: Friday the 13th: 10 10 13 11 13 69 11
An industrial oil heater is tested by its ability to heat up a large room on a cold day and in particular, the rate at which it reaches a desired average temperature. The size of the room and the room temperature prior to switching on the heater were identified as two important factors of the rate at which the average room temperature increases. The experiment was replicated 3 times for each combination. The time (in minutes) till an average temperature increase of 10°C was measured is tabulated below: Factor B Large Classroom (200m2) Large Auditorium (400m2) (1) Treatment Combination (2) Factor A 7°C (1) 8,9,8 22,18,21 12°C (2) 9,10,12 19,29,25 Let factor A be the initial temperature and factor B be size of the room.
The mean height of the starting players in a basketball means is 1.82 m. During a time has a player who is 1.58m is replaced by a player 1.88m tall. What is the mean midpoint of the players after the replacement has been make ?
A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of eight ounces of coffee per cup. If it dispenses more than that on average, the corporation may lose money, and if it dispenses less, the customers may complain. BIG Corporation would like to estimate the mean amount of coffee, H, dispensed per cup by this machine. BIG will choose a random sample of cup amounts 00 dispensed by this machine and use this sample to estimate H. Assuming that the standard deviation of cup amounts dispensed by this machine is 0.43 ounces, what is the minimum sample size needed in order for BIG to be 95% confident that its estimate is within 0.07 ounces of µ? Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.)
Example 19.13 A company used three different methods of advertising its product in three cities. It later found the increased sales (in thousand rupees) in identical retail outlets in the three cities as follows: City A: City B: City C: 70 58 60 45 55 62 89 72 65 57 48 55 75 68 45 52 63 53 59 71 70 63 60 58 75
A farmer wishes to estimate the mean number of farm fires reported each weekend atMuscat area. From a sample of 50 weekends, the farmer found 2 weekends with 7 fires ,18weekends with 9 fires, 16 weekends with 10 fires, and the reminder with 11 reported fires. Thefarımer wants to check whether the average number of farm fires per weekend has changed due tothe new "fire control program" he helped developed last year. The average number of firs perweekend prior to the development of that program was 11.5i.Based on the information collected by the farmer ,test the farmersclaim that the number of farm fires has changed due to the program. Using aone-sided test at the 5% significance levelii) What is the P- value for your test

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a mean crowd size of 345 wi e 0.05 significance level, can we conc ghts at the restaurant is less than 350