3. The length of the thorax (where the wings and the legs attach) of the commonfruit fly in a population of male fruit flies is approximately Normal with mean0.800 millimeters (mm) and standard deviation 0.078 mm.(a) What proportion of flics have thorax length less than 0.65 mm?(b) What proportion of flics have thorax length greater than 0.95 mm?(c) What proportion of flies have thorax length between 0.65 mm and 0.95 mm?(d) What is the interquartile range (IQR) for this Normal distribution?

It is assume that the length of the thorax is denoted by X.The random variable X follows the normal…

Answered: 3. The length of the thorax (where the…

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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2. The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222milligrams per deciliter (mg/dl) and standard deviation 37 mg/dl. A random sample of 58individuals will be collected and the sample mean cholesterol level will be computed. a. What is the mean of the sample mean? b. What is the standard deviation of the sample mean?
4. The variance of a data set is 3410.56. Find the standard deviation for the data set. This ample of
30. The distribution of weights for 12-month-old baby girls in the US is ap- proximately normal with mean u = 21 pounds and standard deviation o = 2.2 pounds. a) If a 12-month-old girl weighs 23.2 pounds, approximately what weight percentile is she in? b) If a 12-month-old girl is in the 16th percentile in weight, estimate her weight. c) Estimate the weight of a 12-month-old girl who is in the 25th percentile by weight. d) Estimate the weight of a 12-month-old girl who is in the 75th percentile by weight.
A researcher collects data that represents the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. The researcher is interested in whether the two groups reliably differ in the amount of sleep they get. Use Jamovi to calculate t-obt and the p value.
2. A. What percent of the area under a perfect normal curve lies between the mean and the mean +1 standard deviation as shown by the shaded area below? B. What percent of the area under a perfect normal curve lies in the shaded section in the graph shown below? -2 +1 0 +2 +3 1
5.
Given a normal distribution with mean 25 and standard deviation 5, find the area under the normal curve from the men to the indicated measurement. A) 36.1?
The weights of the chocolate in Hershey Kisses are normally distributed with a mean of 4.5338 g and a standard deviation of 0.1039 g. a. For the bell-shaped graph of the normal distribution of weights of Hershey Kisses, what is the area under the curve? b. What is the value of the median? a. For the bell-shaped graph of the normal distribution of weights of Hershey Kisses, what is the area under the curve? (Type an integer or a decimal. Do not round.) b. What is the value of the median? g (Round to four decimal places as needed.)
A recent report indicated a typical family spend $650 per month on food. Assume the distribution of food expenditures for a family of five follows a normal distribution, with mean of $650 and standard deviation of $120. A sample of 64 is taken. a) What percentage of the families spends more than $675 per month on food? b) What percentage of the families spends less than $660 per month on food? c) What percentage of the families spends between $660 and $670 per month on food? d) What percentage of the families spends less than $650 or more than $675 per month on
Q) The RATES of a SWEET BOX follows a normal distribution with a mean of $2.20 and a standard deviation of $0.20. Find the RATE for which 10.23% of sweet boxes are exceeded. Round your answer to nearest cent (hundredth) if necessary.
a) In the process of designing an airplane, men were measured to determine the size of the seat that was needed. Men have mean hip width of 36.6 cm and a standard deviation of 2.5 cm. Copy and complete the picture below as we have done in class. b) What percentage of men will have hip widths between 36.6cm and 44.1 cm c) About 95% of men will have hip widths between what lengths?

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