Although, it is commonly believed that the mean for the human bodytemperature is 98.6 F, others doubt it. A random sample of 100 personsshowed the mean body temperature to be 98.4 F with standard deviation of76 F. At a .05 level of significance, find if the data indicates that the meanfor the human body temperature is not equal to 98.6.Which of the following is the correct Ho:Oμ*98.6Ομ < 98.6Ο μ > 98.6O μ =98.6

Sample size : n = 100Sample mean : Sample standard deviation : s = 0.76 FClaim : Level of…

Answered: Although, it is commonly believed that…

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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Assume that the average time for train journeys between London and Brighton is 157 minutes with a standard deviation of 12 minutes. Assume further that a certain journey took 130 minutes. Calculate the z-value for this trip. Enter your answer with two decimals and remember to use commas as decimals.What is the Z-value here?
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.5% of the thermometers are rejected because they have readings that are too high and another 2.5% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents the region in which thermometers are rejected? Choose the correct graph below. O A. O B. C. OD.
A recent study showed that the residents of a local town reported sleeping an average of u =7.97 hours each night with a standard deviation of o =0.424. A random sample of 10 residents had a sample mean of X = 7.766. Find the z-value of this sample mean. Write your answer to two decimal places.
For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 38beats per minute, the mean of the listed pulse rates is x =73.0 beats per minute, and their standard deviation is sequals=23.2 beats per minute. a. What is the difference between the pulse rate of 38 beats per minute and the mean pulse rate of the females? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the pulse rate of 38 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between minus−2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 38 beats per minute significant?
Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard deviation g= 15. Find the probability that a randomly selected adult has an IQ less than 118. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ less than 118 is (Type an integer or decimal rounded to four decimal places as needed.)
The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days and a standard deviation of 15 days. In what range would you expect to find the middle 98% of most pregnancies? [Write your answer as a complete sentence] Edit View Insert Format Tools Table B IU A ev T2v レレ 12pt v Paragraph v 1:13 PM 72°F Sunny 5/7/2022 .. P Type here to search の fo l ins prt sc end 12 delete home f4 f5 & 7 num backspace lock 3 4. 6 8. ... DI 5 %24
The brain volumes (cm) of 20 brains have a mean of 1098.4 cm° and a standard deviation of 120.1 cm. Use the given standard deviation and the range rule of thumb are significantly low or significantly high. For such data, would a brain volume of 1328.6 cm° be significantly high? identify the limits separating values that Significantly low values are cm or lower. (Type an integer or a decimal. Do not round.)
Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 146 minutes with a standard deviation of 13minutes. Consider 49 of the races.Let X = the average of the 49 races. Find the 60th percentile for the average of these 49 marathons. (Round your answer to two decimal places.)min
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.1% of the thermometers are rejected because they have readings that are too high and another 2.1% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others.
Researchers at the National Weather Center in Portland, Maine recorded the number of 90° days each year since records were first kept, starting in 1875. The number of 90° days form a normal-shaped distribution, with a mean of μ = 9.6 days and a standard deviation of σ = 1.9. To see if the data showed any evidence of climate change (and specifically global warming), they also computed the mean number of 90° days for the most recent n = 4 years and obtained a mean number of days for the past four years of x̅ = 12.25 days. Using a one-tailed test with α = .05, the researchers completed the calculations, but they need your help in drawing an appropriate conclusion. (According to their calculations, the standard error is sM = 0.95, and the sample mean of x̅ = 12.25 days corresponds to a z-score of z = 2.79.) Using the same one-tailed test (α = .05), determine if the data indicate that the past four years have had significantly more 90° days than would be expected for a random sample from…

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