Assuming that TV and r eplacement times have a mean of 8.2years of Hlyears, find the probobilily that 50 randomly selected TV Set will have a mean replacement of 7o8 youd standard deviaton yeard OY less

Q: Suppose that the times taken for germination for cauliflower seeds are normally distributed with a…

A:

Q: Supposethat the times taken for germination for cauliflower seeds are normally distributed with a…

A: Assume that X is the random variable denoting the times taken for germination for cauliflower seeds.…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: We have to find out value of x...

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given Data: Let X represent the random variable Mean=9 Standard deviation=1.1 X~ Normal (9, 1.12)…

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: Given, The lifetimes of tires of a certain brand are normally distributed. μ = 74100X = 55000level…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given data,Mean μ=11sd      σ=1.2P(X<x)=20%x=?

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: Given that,  μ=74000x=65000 Consider that only 5% of the tires will fail before warranty expires.…

Q: A food inspector, examining 12 jars of a certain brandof peanut butter, obtained the following…

A: The confidence interval is dependent on the sample statistic and the margin of error of the…

Q: Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard…

A: We want to find the mean

Q: Suppose the number X of tornadoes observed in a particular region during a one-year period has a…

A: Random variable: A random variable X is a real number that describes the outcome of the random…

Q: he lifespan of a 100-W fluorescent lamp is define to be normally distributed with o = 30 hrs. A…

A:

Q: Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard…

A: Given,standard deviation(σ)=100

Q: ) According to my Fitbit, during winter quarter of 2020 (before the COVID-19 shutdown) from January…

A: Before COVID-19 shutdown : n1 = 10 weeks x1 :  averaged 89,051.4 steps per week   s1 : standard…

Q: . Find the standard deviation to be set.

A: Here given  Suppose that the lifetimes of tires of a certain brand are normally distributed with a…

Q: Show that the mean of a random sample of size n from an exponential population is a minimum variance…

A: Let X1, X2, …, Xn denote random sample from exponential distribution with θ. The probability density…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given data,Mean μ=9 million dollarssd     σ=1.1 million dollarsP(X<x)=15%x=?

Q: Suppose that the times taken for germination for cauliflower seeds are normally distributed with a…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A:

Q: From a sample with n= 32, the mean duration of a geyser's eruptions is 3.61 minutes and the standard…

A: Given that,  n= 32 ,μ=3.61σ=1.11 The formula of k is, The value of k is,

Q: A manufacturer daims that the mean lifetime, u, of Its light bulbs is 42 months. The standard…

A: One sample z-test: One sample z-test is used to test the significance difference between population…

Q: Compute the Standard deviation from the following dat=

A: Here given grouped data

Q: Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard…

A:

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: Solution

Q: Let Xi be the allowance the boy gets in the ith week. Assuming a year has 52 weeks, what are the…

A: Let Xi be the allowance the boy get in the ith week. The urn contains 5 bills: #$1=4 and #$10=1 Let…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Solution

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: From the provided information, Mean (µ) = 74000 miles X~N (74000, σ) Here X be a random variable…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given information- Population mean µ = 8 million Standard deviation σ = 1.1 million Z = -1.2816…

Q: According to my Fitbit, during winter quarter of 2020 (before the COVID-19 shutdown) from January 6,…

A: The hypothesis test is a statistical method in which one using the sample data try to check the…

Q: Suppose that the quarterly sales levels among healthcare information systems companies are…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A:

Q: Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard…

A:

Q: Suppose that the times taken for germination for cauliflower seeds are normally distributed with a…

A: Given: Population meanμ=7

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Solution: Let X be the quarterly sales level among health care information systems companies. From…

Q: Suppose that the lifetime of a particular component of a battery (in a container) is known to be…

A: The area of continuous distribution curve within an interval is equal to the proportion of data lies…

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: It is given that the mean is 74,000 and the tires warranty is 65,000 years.

Q: (a) Find a point estimate of μ1 – μ2.  Is the estimate biased or unbiased? (b) Find the estimated…

A: The point estimate is given by MD =  u1 - u2  MD =  110 - 120 MD = -10 The estimate is an unbiased…

Q: Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard…

A:

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: Based on the provided information, the known values are, μ=74,500X=65,000level of significance=1%

Q: Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard…

A: The answer is attached below,

Q: Suppose that the times taken for germination for cauliflower seeds are normally distributed with a…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Let X be the quarterly sale among health care information systems X~N(μ=8, σ2=1.22) P(X<a)=20 %…

Q: uppose that the lifetimes of tires of a certain brand are normally distributed with a mean of 75,000…

A: Given data,Mean μ=75,000P(X<65000)=0.10sd     σ=?

Q: A newspaper article reported that people spends a mean of 6 hours per day watching tv, with a…

A: Given data, μ=6σ=1.8P(Z>z)=15%P(Z>z)=0.15

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: It is given that the quarterly sales levels follow normal distribution with mean 11 and standard…

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: Given that mean =74500 , p value =0.01,x =55000 s.d =?

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Solution: Lex X be the  quarterly sales levels among health care information systems companies are…

Q: A gesearchers wants to test the effect of a drug_by injecting aoo cats with a unit dove of the drugs…

A: (1) The appropriate hypothesis in this case is Here mu is the average response time by a cat.

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: Solution

Q: Let X be the life in hours of a radio tube. Assume that X is normally distributed with the mean 200…

A: It is given that the life in hours of a radio tube is normally distributed with the mean 200 and…