Forty families gathered for a fund-raising event. Suppose the individual contribution for each family is normally distributed with a mean and a standard deviation of $124 and $31, respectively. The organizers would call this event a success if the total contributions exceed $5,200. What is the probability that this fund-raising event is a success? Note: Round your final answer to 4 decimal places. Answer is complete but not entirely correct. Probability 0.0835

Q: The number of miles a certain brand of tires lasts is normally distributed with a mean of 30,000…

A: The mean of the certain brand of tires lasts is 30,000 miles. The standard deviation of the certain…

Q: The diameters of ball bearings are distributed normally. The mean diameter is 87 mm and the standard…

A:

Q: For the most recent year available, the mean annual cost to attend a private university in the…

A: Mean()=20232standard deviation()=4350

Q: Temperatures in a city are distributed approximately normal, with a mean of 73 degrees fahrenheit…

A:

Q: The average price of a college math textbook is $168 and the standard deviation is $20. Suppose that…

A: The average price of a college math textbook is $168 and the standard deviation is $20. Suppose that…

Q: You randomly select 25 teachers. What is the probability that their mean salary is more than $70000,…

A: Given thatRandomly select 25 teachersPopulation mean salary is 56000Standard deviation 15000To…

Q: An insurance salesperson sells an average of 4.90 policies per day. Let x denote the number of…

A:

Q: According to National Testing data, college math class testing times are Normally distributed with a…

A: Given information Mean µ = 56 Standard deviation σ = 4

Q: An appliance dealer's website features the mean life expectancy values for major household…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: IQ test scores are normally distributed with a mean of 98 and a standard deviation of 16. An​…

A:

Q: The population average annual salary for high school teachers in Alhambra is $61,244. A random…

A:

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: The average credit card debt for college students is $3262. The debt is normally distributed with a…

A:

Q: The weights of steers in a herd are distributed normally. The standard deviation is 200lbs. and the…

A: Let "X" be the weight of steers in a herd.

Q: Full time Ph.D. students receive an average of $13,537 per year. If the average salaries are…

A: Introduction: Define X as the random variable of interest here, which denotes the salary of the…

Q: The population mean annual salary for plumbers is $49,000.  A random sample of 25 plumbers is drawn…

A: We have given that Mean(µ) = 49000Standard deviations (σ) = 5800n = 24

Q: furnace bills are normally distributed.  With a mean of 273 and an SD of 30.  If 144 bills are…

A: Let M denote the mean of sample of n = 144 bills. Then M follows N(mean = 273, SD = 30/√(144) = 2.5)…

Q: A certain disease has an incident rate of 0.5%. If the false negative rate is 4% and the false…

A: Given that the false-negative rate is 4%. That means the probability of having the disease when the…

Q: The sales of a salesman average $500 with a standard deviation of $15.2. He gets a $100 commission…

A: The sales of a salesman average $500 with a standard deviation of $15.2. He gets a $100 commission…

Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual…

A: Let X = IQ of an individual.  The probability that the person has an IQ greater than 140.

Q: Provide an appropriate response. Use the Standard Normal Table to find the probability.   IQ test…

A: Solution :- Given data :- μ = 105σ = 13x ^ = 122 Using Z-Score Formula :- z=x^-μσ

Q: Solve the following problem and show your complete solutions. Explain your answer for better…

A: The length of time that a phone will work before it needs charging is normally distributed with mean…

Q: 2. Fill in the blanks: A standardized variable always has a mean of O and a standard deviation of…

A: 2. A standardized variable is always has mean 0 and standard deviation of 1.

Q: The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard…

A: Z= x¯-μσn~N(0,1) n  = 36 , x¯ = 98.6 , μ = 98.6 , σ = 0.6

Q: Find the indicated probability. The incomes of trainees at tthe local mill are normally distributed…

A:

Q: Temperatures a city are distributed approximately normal, with a mean of 61 degrees fahrenheit and a…

A: Given data,Mean μ=61sd    σ=6P(X<70.5)=?

Q: y=3.1  n= 1.6 standard deviation  Find probability that the child spends less than 3.4 hours a day…

A: Given that If  y=3.1  n= 1.6 standard deviation

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

A:

Q: According to BusinessWeek, 44% of advertisers claim they have been a victim of internet click fraud.…

A: The mean is, μ=np=120×0.44=52.8 The mean is 52.8. The standard deviation is,…

Q: Billiard tables have mean degree of balance 0 and standard deviation 1. What is the probability…

A: It is given that the mean and standard deviation are 0 and 1.

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: Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 38 miles…

A: