The diameters of watermelons at a local supermarket are normally distributed with a mean of 10 inches and a standard deviation o. Find o if 95% of watermelons have a diameter between 6 inches and 14 inches.

Q: Assume the average (mean) number of minutes a group of people meditate is 20 minute per day and has…

A: Solution: Let X :  A group of people mediate.  Assumed X be the normal distribution with mean 20…

Q: The mean is u: = and the standard deviation is o: =

A: Given,

Q: At the shot put event the mean was a throw of 44.22 feet, with a standard deviation of 3.65 feet.…

A:

Q: for a population with a standard deviation of 5 and mean of 40, draw a bell shaped curve, marking…

A: In statistics, the empirical rule says that for normal distribution, 68%, 95%, and 99.7% of the…

Q: The trunk diameter, in centimeters,  of a certain variety of pine tree is represented by X~N(150,…

A: Let X denote the trunk diameter in centimetres of a certain variety of pine tree and it follows…

Q: The depth of the snow in my yard is normally distributed, with a mean of 2.5 inches and a standard…

A: It is given that the depth of the snow follows a normal distribution with mean 2.5 inches and…

Q: The heights of men, in centimetres, are normally distributed with a mean of 175 and a standard…

A:

Q: During 1 week, an overnight delivery company found that the weights of its parcels were normally…

A:

Q: Find the mean, mode and standard deviation of the distribution.

A: Given: f(x)=1x2πe-12logx2      for x>0       =0  for  x<0

Q: The weights of 60 females in a physical education class are normally distributed with a mean of 135…

A: Obtain the Z-score for the random variable X equals 150 The Z-score for the random variable X equals…

Q: The annual per capita consumption of bottled water was 30.2 gallons. Assume that the per capita…

A: Given information- Population mean, µ = 30.2 gallons Population standard deviation, σ = 13 gallons…

Q: If the mean height of bonsai trees is 52 cm with a standard deviation of 10 cm, 95% of the trees are…

A: NOTE : As per our guidelines we have to answer the first question if multiple questions are posted…

Q: John beale of stanford, ca, recorded the speeds of car driving past his house, where the speed limit…

A: Standardized z-score:   The standardized z-score represents the number of standard deviations the…

Q: The cruising altitudes for the fleet of one commercial airliner are normally distributed with a mean…

A: It is given that the mean is 34,950 and the standard deviation is 1,800.

Q: The annual commissilons per salesperson employed by a retailer of mobile communication devices…

A: Let X be the random variable from normal distribution with mean (μ) = $ 41200 ans standard deviation…

Q: A police radar gun is used to measure the speeds of cars on a highway. The speeds of cars are…

A:

Q: The length of time it takes a Grade 11 student to play the Candy Crush computer app follows a normal…

A: Given that  The length of time it takes a grade 11student to play the candy crush computer is…

Q: In a mango farm of 250 trees, the mean harvest is 96.5 kilos of fruit per tree with a standard…

A: Given,sample size(n)=250mean(μ)=96.5standard deviation(σ)=8.4

Q: The height of adult men in the United States is normally distributed with a mean of 70 inches and a…

A: Z = -0.67 Mu = 70 S = 3

Q: 95% of 80 night students scored between 70% and 80% on a quiz. If this data is normally distributed,…

A: Given: Total number of students n=80.             let X  denote the marks of students then,  X ~N(µ,…

Q: Given a distribution with a mean of 70 and a standard deviation of 62, find a value with a z-score…

A:

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: Steel rods are manufactured with a mean length of 27 centimeter​ (cm). Because of variability in the…

A: Given,mean(μ)=27standard deviation(σ)=0.06

Q: On a standardized exam, the scores are normally distributed with a mean of 650 and a standard…

A:

Q: Find the range and standard deviation for the data items in the histogram below. 5 4 Frequency

A: From the histogram, The frequency table is, Data Frequency 10-20 2 20-30 5 30-40 5 40-50…

Q: Find the standard deviation for the grouped data.

A: Solution; Interval Frequency (f) midpoint(x) fx (x-x)2 f*(x-x)2 50-59 7 54.5 381.5 351.5625…

Q: The weights, in pounds, of a group of dogs are:          18, 31, 22, 46, 55, 28.    Calculate the…

A: Given Data The weight of a group of dogs are: 18,31,22,46,55,28   The size of group is N=6   The…

Q: In an all boys school, the heights of the student body are normally distributed with a mean of 69…

A:

Q: The mean height of trees in the virgin forest of Zambales is 42 feet and the standard deviation is 3…

A: The mean height of trees in the virgin forest of Zambales is 42 feet and the standard deviation is 3…

Q: when designing aircraft cabins, what ceiling height will alow 98% of men to stand without bumping…

A:

Q: for a population with a standard deviation of 10 and mean of 100, draw a bell shaped curve, marking…

A: We have to draw bell shaped curved and marking location of the mean and standard deviation..

Q: Nabisco claims that Chip Ahoy Cookies have an x=28.67 per cookie with a SD=2.67. Assuming this…

A: Here, the sample standard deviation is given as 2.67.

Q: а. How many of the women have a height that is within 1 standard deviation of the mean? b. How many…

A:

Q: In an all boys school, the heights of the student body are normally distributed with a mean of 71…

A: Solution: Let X be the height of the student boy. From the given information, X follows normal…

Q: Given a distribution with a mean of 117 and standard deviation of 42, find a value with a z-score of…

A: Consider that X is a random variable and the given distribution follows normal distribution mean 117…

Q: The mean June midday temperature in Desertville is 36°C and the standard deviation is 3°C. Assuming…

A: Determine the number of days in June would be expected the midday temperature to be between 39°C and…

Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…

A: The detailed solution is as follows below:

Q: On a standardized exam, the scores are normally distributed with a mean of 170 and a standard…

A: We have to find z score..

Q: A particular fruits weights are normally distributed, with a mean of 797 grams and a standard…

A: Let us assume X= weight of a particular fruit Given that X follows a normal distribution with mean=…

Q: An agronomist measured the height of 134 canola plants. The mean height was 214 cm and the standard…

A:

Q: The starting salary for a computer programmer major has a mean of $39,269 and a standard deviation…

A:

Q: The standard deviation of the base price of a certain type of all-terrain vehicle is equal to $322.

A:

Q: John beale of stanford, ca, recorded the speeds of car driving past his house, where the speed limit…

A: Given: μ=23.84σ=3.56 a) The Z score is obtained as below: z=x-μσ=20-23.843.56=-3.843.56=-1.08 Thus,…

Q: The annual per capita consumption of bottled water was 33.3 gallons. Assume that the per capita…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

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: Assume that a person in the U.S. eats of M&M's per year follow normal distribution. μ=25σ=3 Let…

Q: m and 5.50 m. What is the standard deviation

A: Introduction: The Standard Deviation in descriptive statistics is the degree of dispersion or…

Q: for a population with a standard deviation of 4.2 and mean of 32.5, draw a bell shaped curve,…

A:

Q: The daily water usage per person in Davao City is normally distributed with a mean of 20 gallons and…

A: Given that, Mean = 20 Standard deviation = 5

Q: for a population with a standard deviation of 8 and mean of 40, draw a bell shaped curve, marking…

A: Given data  Mean = 40 and standard deviation= 8

Q: the heights of 200 plants in a garden follow a normal distribution with mean of 72.3 cm with a…

A: Formula : Z =(X - μ)/σ