Assume that we want to construct a confidenceinterval. Do one of the following, as appropriate: (a)find the critical value to/2. (b) find the critical valueZa/2, or (c) state that neither the normal distributionnor the t distribution applies.The confidence level is 90%, o is not known, and thehistogram of 55 player salaries (in thousands ofdollars) of football players on a team is as shown.4000 8000 12000 16000 20000Salary (thousands of dollars)Select the correct choice below and, if necessary, fill in the answer box to complete your choice.O A.txx/2 =(Round to two decimal places as needed.)OB. Z₁1/2(Round to two decimal places as needed.)O C. Neither the normal distribution nor the t distribution applies.Frequency4030-20-10-0-0Q

Given that Sample size n =55 90% confidence interval.

Answered: ume that we want to construct a…

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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A sample is selected from a population withu = 50. After a treatment is administered to the 16 individuals in the sample, the mean is found to be M = 55 and the standard deviation is s = 8, What is the test statistic for the sample mean?
In a medical examination, 300 people undergo a height measurement and was found out that the average height of all are 150cm. If the standard deviation is 19, find the number of people that fall under the given conditions: With height less than 132cm. With height from 140 cm to 180 cm With height taller than 200 cm With height from 160cm to 195 cm With height from 150 cm to 200cm Determine the range of the height that includes the central 60% 45% of the people who undergo the medical examinations are qualified to be part of the varsity. What is the limit height to be part of the varsity?
tion 15 of 25 Birth weights at a local hospital have a Normal distribution, with a mean of 110 oz and a standard deviation of 15 oz. The proportion of infants with birth weights above 125 oz is: O 0.500. 0.159. O 0.341. 0.841. terms of use contact us help aboutus prvacy poly 452 PM 10/14/2020 真 a 2. prt sc insert 110
Scores on the wechsler adult intelligence scale for the 20-to-34 age group are approximately normally distributed with a mean of 110 and a standard deviation of 25 1.) sketch a picture of the distribution and label the scale 2.) Between what two scores do the middle 95% of all people between the ages of 20 and 34 fall within 3.) How high must a person score to be in the top 15% of all scores
Assume that weights of adult females are normally distributed with a mean of 79 kg and a standard deviation of 20 kg. What percentage of individual adult females have weights between 73 kg and 85 kg? If samples of 64 adult females are randomly selected and the mean weight is computed for each sample, what percentage of the sample means are between 73 kg and 85 kg? The percentage of individual adult females with weights between 73 kg and 85 kg is 23.6 % (Round to one decimal place as needed.) The percentage of samples of 64 adult females with mean weights between 73 kg and 85 kg is (Round to one decimal place as needed.)
Suppose that the creatine kinase levels among healthy males are normally distributed with a standard deviation of 23 units Research shows that exactly L units -. What is the mean creatine kinase level in healthy males? Carry your intermediate 5% of the healthy males have a creatine kinase level above 153 computations to at least four decimal places. Round your answer to at least one decimal place. units
2) The average life of a special rechargeable battery for a Calculator that performs 45 functions is 700 hours, with A standard deviation of 37 hours. A sample of 50 batteries is randomly selected, what percentage of the batteries will last more then 705 hours?
Paramesan cheese is aged for an average of 24 months to allow it to develop the desire richness in flavor the standard deviation for the length of time Parmesan cheese is aged is 3.7 months How long would Parmesan cheese have to be aged in order to be in the 90th percentile? Assume that the data is normally distributed
Suppose the 90% confidence interval for the mean SAT scores of applicants at a business college is given by [1,691, 1,838]. This confidence interval uses the sample mean and the sample standard deviation based on 25 observations. Use t value 1.711 in your calculations. [You may find it useful to reference the t table.] What are the sample mean and the sample standard deviation used when computing the interval? (Round final answers to 2 decimal places.) sample mean = 1,764.50 sample standard deviation=??? ANSWER IS NOT 358.95
Suppose that the speeds of car is traveling in California freeways are normally distributed with a mean of 63 mph. The highway patrols policy is to issue tickets for cars with speeds exceeding 80 mph. The records show that exactly 2% of the speed succeed this limit find the standard deviation of the speed of cars traveling on California’s freeway. Carry your intermediate computations to at least four decimal places in round your answer to at least one decimal place.
Q2) A certain machine makes electrical resistors having a mean resistance of 60 ohms and a standard deviation of 2 ohms. Assuming that the resistance follows a normal distribution and can be measured to any degree of accuracy, what percentage of resistors will have a resistance exceeding 63 ohms?
Suppose we have the short hand info on a Normal Distribution as N(10,25). What is the population mean of the distribution and what is the population standard deviation? μ = σ =

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