In a recent year, Delaware had the highest per capita annual income with  $51,803 . If  =σ$4850 , answer the following questions. Assume that the sample is taken from a large population and the correction factor can be ignored. Round intermediate  z What is the probability that a random sample of  39  state residents had a mean income less than  $48,800 ? -value calculations to two decimal places and the final answers to at least four decimal places.

Q: The mean weight of an adult is 62 kilograms with a variance of 144. If 195 adults are randomly…

A: Population mean=M=62 Population variance=S2=144 Population standard deviation=√S2=√144=12 Sample…

Q: F. For the following data set, complete the table and determine the mean, median, mode and standard…

A:

Q: A population has a mean of 200 and a standard deviation of 25. A sample of 64 observations will be…

A: We have to find out given probabiity..

Q: According to a recent survey, 71% of teens ages 12-17 in a certain country used social networks in…

A: Sample size n=140Population proportion p=0.71

Q: 2. The mean afternoon temperature in Quezon City for the month of April is 37°C and the standard…

A: The normal distribution related problems can be solved by using the standard normal z score method…

Q: The probability that it snows in a particular city on any given winter day is 13%. What is the…

A: Given that the probability that it snows in a particular city on any given winter day is 13%. Let,…

Q: The number of ants per acre in the forest is normally distributed with mean 42,000 and standard…

A:

Q: 4. On a certain standardized test, the population mean is 250 with a standard error of the mean of…

A: Given: Population mean, μ=250Standard error of mean, σx¯=25

Q: The owner of a computer repair shop has determined that their daily revenue has mean $7200 and…

A: We have given that  Mean(µ) = 7200Standard deviations (σ) = 1200 Number of days (n) = 30

Q: A quart of Parker's milk contains a mean of 39 grams of butterfat, with a standard deviation of 2…

A: Mean = 39 Standard deviation = 2

Q: Exhibit 6-5 The weight of items produced by a machine is normally distributed with a mean of 8…

A: Given that  Mean = 8 Standard deviation = 2 Find P(X = 8 )

Q: use a ti84 device to solve. A quality control expert at Glotech computers wants to test their new…

A: Given: X~Nμ, σ The value of n is 121. The value of μ= 85 The value of σ is estimated as, σ = 49 = 7…

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Given Information : In a city with three high schools, all the ninth graders took a Standardized…

Q: Assume the probability that a maple tree at age 5 grows less than 130 cm is equal to 0.1. If the…

A:

Q: The lifetime of a specific electrical circuit is described by an exponential distribution. The…

A: The provided information is as follows:The lifetime of a specific electrical circuit is described by…

Q: A social science professor wants to determine if the amount of time that a student, who is in a…

A: Since you have posted question with multiple subparts,we will solve first three subparts for you.To…

Q: About 7% of the population has a particular genetic mutation. 200 people are randomly selected. Find…

A: Sample size (n) = 200P(genetic mutation) = p = 0.07X = Number of people with genetic mutationMean of…

Q: 9. The principal at a local high school asked 100 randomly selected students how many minutes they…

A: 9) Statistic: The value which is calculated from the sample values is named as statistic. Parameter:…

Q: 2. An electronic company in laguna manufactures resisters that have aean resistance of 120 ohms and…

A: Given that: Mean resistance: μ=120Ω Standard deviation: σ=13Ω Random sample: n=40 For : Px>114

Q: The average height of grade 11 female students of a certain college is approximately normally…

A:

Q: Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are…

A: Given that ; μ = $ 12837 ? = $ 1500 X = $ 17000 To find P( x < 17000) =  ? ?  P( x > 17000) =…

Q: In A-1. The 8th hr. Probability was cut off. I would need that answer as well. In C. The mean and…

A: a-1. The probability distribution for the number of hours parked is, Hours Probability 1…

Q: Examine the image below and then answer all parts of the question under it. Enter your answers as…

A: a) There are 4 yellow objects in 10 objects.So, P(yellow)=410=0.4b) There are 3 hearts in the 10…

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: The probabilities that a person is receiving a chat message 0, 1, 2, 3, 4, or 5 per day are the…

A: Let X be the random variable having probability distribution is,  X 0 1 2 3 4 5 P(x)  0.08 0.19…

Q: State the formula for Variance.

A: Equation that defines the population variance σ2=∑(X-μ)2N Here, σ2 is variance, (X-μ) is distances…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: - 0.287). This means ance that a pair of rande

A: here we can see that administrator found no significant difference between mean GPA for male and…

Q: A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations be taken.…

A: Given: Population mean μ = 84 Population standard deviation σ = 12 Sample size n = 36

Q: The Powerball lottery jackpot has a winning probability of 1/189,000,000.  If you only consider the…

A: From the given information, Consider, X is the random variable that shows the net gain.  Pr(winning…

Q: A professor knows that her statistics students' final exam scores have a mean of 79 and a standard…

A:

Q: While doing an experiment, a physics student recorded the following sequence of elapsed times (in…

A: According to the given information, we have Total number of observations = 7

Q: An agent for a residential real estate company in a suburb located outside a major city has the…

A: Given the data as Monthly Rent($) Size (Square Feet) 900 900 1600 1200 825 1050 1450 1200…

Q: You play a game of chance that you can either win or lose (there are no other possibilities) until…

A: Probability of losing (p) the game is 0.61 Probability of winning the game = 1- p = 1- 0.61=0.39

Q: from om a study interviewed two random samples, one in Read a print book Yes No Total 2015 1206 680…

A: Read a print book20152018TotalYes120613152521No6806951375Total18862010

Q: d. There is a 30% chance that X is above what value? X=[ (Type an integer or decimal rounded to two…

A: Given: n=100μ=50σ=5

Q: Q6- Assume the probability that a maple tree at age 5 grows less than 140 cm is equal to 0.2. If the…

A: Given Data: Let X represent the height of the maple tree P(x<140)=0.2 σ=81=9

Q: For example, let us assume that the mean quantity of cholesterol in eggs is 185 milligrams with a…

A:

Q: Calculate the value of pool standard deviation (Sp), degree of freedom in the light of part “b” and…

A:

Q: The data in the accompanying table are from a paper. Suppose that each person in a random sample of…

A: