A researcher studying frogs is investigating the distance that a certain species of frog can jump. The jump lengths appear to be approximately normally distributed with a mean of 85 inches and a standard deviation of 12 inches. Directions: Make a sketch of the "empirical rule" for this setting. a) What proportion of frog jumps are less than 61 inches? (Enter a proprtion as a decimal, not a %)  b) What jump lengths represent the middle 95% of frog jumps? Between ___ and ____ c) What is the probability of observing a random frog jump that is longer than  97 inches?

Q: Researchers conducting a study of 15 children with a diagnosis of ADHD wish to assess whether the…

A: The BMI of 15 children is given.

Q: The lengths of brook trout caught in a certain Colorado stream are normally distributed with a mean…

A: Given that :  Mean = 14 inches S. D = 3 inches Here we use standard normal distribution concept…

Q: A history class has 95 members. If there is a 22% absentee rate per class meeting , find the mean…

A:

Q: The time taken to boil a kettle is normally  distributed with a mean of 94 seconds and  a standard…

A: The provided information is  µ=94 σ=6 P(-a<X<a)=0.40…

Q: If on an average 8 ships out of 10 arrive safely at a port, find the mean and standard deviation of…

A:

Q: The channel catfish has a mean length of 22 inches with a standard deviation of 4 inches in a…

A: The normal distribution is a continuous probability distribution. From this distribution, we can get…

Q: A set of wrist watch prices are normally distributed with a mean of 76dollars and a standard…

A: From the provided information, Mean (µ) = 76 Standard deviation (σ) = 10 X~N (76, 10) Here X be a…

Q: the widget weight have a mean of 61 ounces and a standard deviation of 5 ounces. 99.7 of the widget…

A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: When Christian runs the 400 meter dash, his finishing times are normally distributed with a mean of…

A:

Q: (b) What is the 95% confidence interval estimate of the population mean examination score if a…

A:

Q: The mean number of hours per day spent watching television, according to a national survey, is 3.5…

A: From the provided information, Mean (µ) = 3.5 Standard deviation (σ) = 2

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: Can the standard deviation of a data set be zero

A: Standard deviation can not be negative.

Q: A health professional is whether stress level before a routine practice session can be used to…

A: Given : A health professional is whether stress level before a routine practice session can be used…

Q: Scientists find that a particular species of caterpillar has a mean mass of 32 grams with a standard…

A:

Q: Steel rods are manufactured with a mean length of 28 centimeters. because because of variability in…

A: Answer:- Given, Mean, µ = 28  Standard deviation, σ = 0.06  Let, X = Length of the steel rods.  So,…

Q: what do range, standard deviation and box and plot diagram have in common?

A: Introduction: The boxplot or a box-and-whisker plot is a graphical representation of a data set. In…

Q: The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1300…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: The lengths of brook trout caught in a certain Colorado stream are normally distributed with a mean…

A: Mean==14Standard deviation==3

Q: According to the Department of Education the mean number of hours college students spend studying…

A: Given data,Mean μ=20sd     σ=9

Q: When Emma commutes to work, the amount of time it takes her to arrive is normally distributed with a…

A: Here given data are:

Q: According to the Department of Education the mean number of hours college students spend studying…

A:

Q: there are 75 students in the class and 20 students are getting a+ grade in the class find the mean…

A:

Q: According to the Department of Education the mean number of hours college students spend studying…

A: Given, mean(μ)=28standard deviation(σ)=6 Let x=no.of hours of study