Assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury ( mmHg) and the standard deviation is 5.6. Assume the variable is normally distributed. Round the answers to at least 4 decimal places and intermediate z-value calculations to 2 decimal places.

Q: The average birth weight of elephants is 220 pounds. Assume that the distribution of birth weights…

A: Solution-: Given: μ=220,σ=50 We want to find the birth weight of elephants at the 90th percentile.

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Given information Mean µ = 25 pounds Standard deviation σ = 3 pounds Z = -2

Q: Four samples are taken and averaged every hour from a production line and the hourly measurement of…

A: We know that according to empirical rule, 99% data falls within three standard deviation 95% of…

Q: Male and female populations of tortoises under 80 years old are represented by age in the table…

A: Here the given table is : Age males females…

Q: Score 15- 12- 6. 0. 9. 8. 9. 10 11 12 Ico 6. 3. Frequenoy

A: Form the given graph we have to find the standard deviation

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

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Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Introduction: Denote X as a randomly selected reading on the thermometer; X has a normal…

Q: Which graph represents the region in which thermometers are rejected? Choose the correct graph b-…

A: The mean is 0 and the standard deviation is 1.

Q: Suppose that resting pulse rates of adult males are normally distributed with a mean of 72 beats per…

A: The following information has been provided: Let X be a random variable represents the resting pulse…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A:

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A:

Q: Question 7 Calculate the standard deviation of the data shown, to two decim 5.8 224 29.7 26.5 28.4

A: The formula of sample standard deviation is,

Q: GET THE STANDARD DEVIATION

A: We have  intervals of age group as, .The sample mean for  age group. The total sample mean, =2.20.

Q: I. Find the area under the standard normal distribution curve. Between 2-0 and Z - 1.77 2. Between 0…

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Q: an =125 and standard deviation a= 14. d the 80th percentile of the distribution of systolic blood…

A: Let x denote the systolic blood pressure of males . Here x is approximately normally distributed…

Q: Find the most probable value and standard deviation of the measured length

A: Following are the definitions of terms necessarily must precede a discussion of least squares :…

Q: Write down the formulas for the standard deviation of x.

A: The formula for the sample standard deviation can be written as: Here, n is the sample size and x̅…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: X: Readings on thermometer (in °C) X~N(0,1)

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A:

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: From the given information, the readings on the thermometers are normally distributed with a mean 0…

Q: ssume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: To find the critical z value for each tail which reflects the temperature that is too high and…

Q: A California lake has been stocked with rainbow trout. These trout have an average length of 24…

A: Given Information: Mean μ=24 Standard deviation σ=3 Someone goes fishing and catches a trout that is…

Q: doctor in the oncology department of a hospital surveyed the breathing rateof cancer patients. The…

A: The empirical rule should be used in this problem.

Q: The average birth weight of elephants is 230 pounds. Assume that the distribution of birth weights…

A: Given,mean(μ)=230standard deviation(σ)=50

Q: The mean score on a driving exam for a group of drivers education students is 72 points with a…

A: Given information: The mean score on a driving exam for a group of drivers education students is 72…

Q: The standard deviation never been negative because it represents the Speed O Distance O Time Average…

A: We have to find why standard deviation can never be negative.

Q: Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons…

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Q: The distribution of blood cholesterol level in the population of young men aged 20 to 34 years is…

A: Sample mean=barx =174 Sample standard deviation =45 Sample size=n=13 Confidence level=0.90…

Q: . Adult men Stride length (meters) 2.5 3.0 3.3 3.5 3.8 4.0 4.2 4.5 Speed (meters per second) 3.4 4.9…

A: We have given that,  The data set is,  Stride length (X) :- 2.5, 3.0, 3.3, 3.5, 3.8, 4.0, 4.2, 4.5…

Q: Karen scored a 76 on an exam whose mean is 74 and whose standard deviation is 8. Find her z score.

A: