et x be a random variable that represents the weight of a lion in a certain region of Africa. Assume that x is normally distributed with a mean = 260 lbs . With standard deviation =30 lb  Please include the graphs for questions A and B

Q: If these data are converted to deviation scores, the last value (15) would have a value of Y 2 9 11…

A: Solution: The mean of Y is

Q: 4. If P(X) =, what are the possible values of X for it to be a probability distribution? А. О, 2, 3…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Do twenty-year-olds have fewer cavities? The data show the results of a survey of 16…

A: Given : Claim : The population mean number of cavities for twenty-year-olds is less than 4.

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A:

Q: The weights of the valves produced by a company are normally distributed with a mean weight of 1311…

A: Given, μ = 1311 σ = 314 We have Z = x-μσ

Q: A statistics test has a mean of 60 and a standard deviation of 10 while an accounting test has a…

A: Given information Statistics test Mean µ = 60 Standard deviation σ = 10

Q: Assume the speed of vehicles along an open stretch of a certain highway in Texas that is not heavily…

A: It is given that mean is 71 and standard deviation is 3.125.

Q: Here are the weights of the bass from Tina’s sample: 12, 9, 15, 10, and 11.  We do not know the…

A:

Q: This population has a mean of 50. If we took an infinite number of samples and got the mean of each…

A:

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 9.  Do…

A: Given data: 8,5,5,6,5,11,9,7,10,6,9,7,6,6,11,10 Sample Mean, x̄ = Σx/n = 121/16 = 7.5625 Variance,…

Q: 2.) A ski gondola in Vail, Colorado that carries skiers up a mountain bears a plaque stating that…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: Total plasma volume is important in determining the required plasma component in blood replacement…

A: Sample size Sample mean Population standard deviation

Q: If a normal distribution has a mean of 77 and a standard deviation of 11, complete the normal…

A: Given that  Mean = 77, Standard deviation, SD = 11

Q: The mean of normal distribution probably is 400 pound and SD is 10 pound what is the area 415 pound…

A: In this context, the mean of normal distribution probably is 400 pound and SD is 10 pound. Here, we…

Q: An instructor gives a 100 point examination in which the grades are normally distributed. hte mean…

A: Given:- The sample follows a normal distribution with a mean, μ =60, & a standard deviation, of…

Q: Find the proportion of Normally distributed observations with a z-score below 0.02. Give your answer…

A: Solution-: We want to find, (a) The proportion of Normally distributed observations with a z-score…

Q: The accounting department at Weston Materials, Inc., a national manufacturter of unattached garages,…

A:

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 4.  Do…

A: Given data, 4, 3, 6, 6, 4, 3, 3, 3, 4, 5, 4, 4, 6, 3, 3 Sample mean: Sample mean for the given data…

Q: When tossing two dice and finding the mean, X we find that has a mean or expected value, and a…

A: Here, it is known that the mean is 3.5 and a population standard deviation of 1.7078. The sample…

Q: Consider the variable, type of birth control practiced (e.g., an IUD, condoms, none, etc). Which…

A:

Q: Complete parts a and b below. Assume that a similar boat is loaded with 60 passengers, and assume…

A: Given that , 60 passengers are loaded i.e. n=60,  and  mean weight and standard deviation between…

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

A: Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees and…

Q: In a county male height is normally distributed with a mean of 175 cm and a standard deviation of 6…

A: Given that.   X~N( μ , ?^2 )   μ=175   , ?=6   Z-score =( x - μ )/?

Q: The number of hurricanes coming within 250 miles is modeled by Polsson distribution with meanz per…

A: Let X be the time, in years, between hurricanes. The number of hurricanes coming within 250 miles of…

Q: The length of 100 movies was recorded and the standard deviation was computed. This would be a:…

A: We have given that The length of 100 movies was recorded and the standard deviation was computed

Q: In how many ways can 12 jury members be seated in a court?  b) What is the probability that Ashley…

A: Here use different method for possible no of arrangement

Q: The department has decided that all marks from introductory psychology courses should be reported…

A: Here For two different  Distribution Comparison we will Use Standardized statics (Z)..

Q: average marks obta follows Section Average marks No. of students Find combined mean. by the students…

A:

Q: A factory produces protein bars claiming to be 3.25 ounces. The manager of the factory knows that…

A: given data normal distribution μ = 3.25σ= 0.05n = 24stop if ∑x<77.5 or ∑x>78.5

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 7.  Do…

A: Given data is 4,8,5,7,7,4,8,5,4,4,6sample size(n)=11

Q: (b) Based on your sample, graph the 95% confidence interval for the population mean of all the…

A:

Q: Two tools commonly used to test how close the dispersion of data matches the distribution shape of a…

A: The normal distribution serves as a fundamental model for the distribution of many natural…

Q: A notable indicator of a baby's health is the weight gained in the first year of the baby's life.…

A: From given data we have ;   sample size =15 Point estimate  = 5.658 standard deviation =1.869   here…

Q: 2. Assume that IQ scores follow a Normal distribution with µ=100 and o=16. Using our IQR rule for…

A: Given, IQ score follows normal distribution with mean 100 and standard deviation 16.…

Q: A given set of data has a specific variance. Describe what will happen to the variance when all the…

A: Suppose, data is X=(10,15,20,25,30)

Q: Find the probability that the mean for 20 randomly selected distances is greater than 195.70 cm.

A: Given that.   X~N( μ , ?)   μ=197.5     , ?=8.9   Z-score =( x - μ )/?

Q: 3) Draw Q-Q plot of the data set X. Interpret your result related with the normal distribution.

A: 3) Given that, The data on midterm result (X) and final exam result (Y).

Q: 2. Find EX where z=-2.

A: It is given asμx = 45σx = 8n = 50

Q: The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one…

A: In this intriguing analysis centered around traffic speeds near Johnson City High School, the…