Find the probability for each house that the electric usage will not exceed 400W. 2. Find the probability that both houses will exceed 400W in usage. 3.Given the probability of 0.02, how much electricity must House B consume to avoid exceeding?

Q: The weights in ounces of newborn infants were recorded by a hospital. The weights were 88, 99, 82,…

A: Given data,   88, 99, 82, 81, 84 and 100   First find the sample mean. Mean:

Q: The mean IQ of 500 data science students is 151  and the standard deviation is 15. Assuming that the…

A:

Q: The weight of a truck tire must be 110 lbs. The company has a low specification limit of 100 lbs.…

A: The mean weight of a truck tire = 110 lbs Lower specification limit (LSL) = 100 lbs Upper…

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the…

A: Solution: Let X be the weights of steers in a herd. From the given information, X follows normal…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: 3. The number of miles traveled per gallon of gasoline for a certain car has a mean of 25 and a…

A: Given that  Mean=25 Standard deviation =2 Sample size n=20

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: given data μ=200σ=9normal distribution P(200<x<225)=?

Q: .. Lori just bought a set of 4 tires for her car. The life of a tire is normally distributed with a…

A:

Q: The mean number of eggs that a person consumes per year is 293.6 pieces. Assume that the standard…

A: The number of egg consume are normally distributed with a mean 293.6 and a standard deviation of…

Q: Use the data 2, 3, 3, 6, 6, 7. Add 2 to each of the numbers. How does this affect the mean? How does…

A:

Q: Cures had a Mean of 82 and a Standard Deviation of 5 6. Find a z score for x =81 and x = 68 Z- score…

A:

Q: If the average number of textbooks in professors' offices is 14, the standard deviation is 5, and…

A: Given that For textbooks, mean = 14, and SD = 5 For age, mean = 42, and SD = 10

Q: For the given values ​​, calculate the standard deviation .

A: Given Data : For calculating the standard deviation, below table will be used    YY Y2Y^2 1 5…

Q: The net weight of a can of salmon is a random variable with a mean of 6.07 ounces and a standard…

A:

Q: It takes an average of 12.1 minutes for blood to begin clotting after an injury. An EMT wants to see…

A: The random variable is time to blood clotting.We have to test whether the population mean time for…

Q: JaJuan want to estimate the average student GPA at his high school. He surveys 37 students and finds…

A: Given,sample size(n)=37sample mean(x¯)=3.33population standard deviation (σ)=0.29

Q: a survey of Town X found an average of 3.2 perosns per household and a mean of 1.2 televisions. I f…

A:

Q: 4. A car salesperson notes that she sells either 1, 2, 3, 4, 5 or 6 cars per week with equal…

A:

Q: The average score of all golfers for a particular course has a mean of 76 and a standard deviation…

A: We have given information with the usual notation, Let X denote the score of golfers for a…

Q: Temperatures in a city are distributed approximately normal, with a mean of 69 degrees Fahrenheit…

A:

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the…

A:

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

A:

Q: You want to determine the probability that when seven consumers are randomly selected, exactly two…

A: 1. n = 7, x = 2, p = 0.45, q = 0.552. Mean, μ = 3.15    Standard Deviation, σ = 1.31623. P(X = 2) =…

Q: The density function of a certain random variable X is given by 1 B(a, e)*(1 – x)o-1 0, f(x) ,if 0 <…

A:

Q: Trucks in a delivery fleet travel a mean of 130 miles per day with a standard deviation of 39 miles…

A: The data on per day mileage of a delivery truck is normally distributed. Population mean, Population…

Q: The average IQ of the adult population is 100. A researcher believes that average IQ of the…

A: The sample mean is calculated as follows: Mean = (69+79+89+99+109)/5           = 445/5           =…

Q: William revealed that he makes 1,000,000 dollars annually. The average annual income in the country…

A:

Q: Pharmacist lilly  is researching how long the active ingredient in a particular drug is measured in…

A: 1.   Denote μ as the population mean time of the drug is active in the liver of people after oral…

Q: Calculate the sample standard deviation for this data set: 88, 73, 91. The formula for the sample…

A: Given: Data set:88,73,91. n=3 Step 1: The sample mean is calculated as x¯=∑xin=88+73+913=84 Thus,…

Q: that the distribution is normal. What is the chance that three indoor cats die between 15 and 18…

A: here mean= 14 year standard deviation  = 2.5 year

Q: The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5…

A: given data,normal distribution μ=5σ=3probability that person will wait more than 9 minutes =?

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: The mean weight of 150 students in a certain class is 60 kg. The mean weight of boys in the class is…

A:

Q: Find the probability that a randomly selected year of rain in Sydney, Australia has a yearly…

A: Given Population mean μ=137, population standard deviations σ=69, Let X be the rain in Sydney Note:…

Q: The mean number of eggs that a person consumes per year is 293.6 pieces. Assume that the standard…

A:

Q: A machine makes sticks of butter whose average weight is 4.0 ounces. The SD of the weights is 0.05…

A:

Q: The average hourly wage for manufacturing workers in the United States is $16.08 per hour, with a…

A: For the distribution (specified to be normal) of the hourly wage (in ) for manufacturing workers in…

Q: approximately the same. A recruiting office randomly surveys 50 entry level statisticians and 50…

A: Given Information: Number of statisticians,n1=50 Mean salary of statistician, x1¯=41100 Standard…

Q: Assume that women's weights are normally distributed with a mean given by mean=143 lb and a standard…

A:

Q: Does it take less time for seeds to germinate if they are near rock music that is continuously…

A: The number of seeds were exposed to rock music, The number of seeds were exposed to classical music,…

Q: IV. The table below shows the number of students who visit the library per day. X 30 45 52 55 60 16.…

A: