A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations will be taken. The probability that the sample mean will be between 80.54 and 88.9 is O a 8.3600 Ob 0.0347 Oc 09511 Od 0.7200

Q: The weights of college football players are normally distributed with a mean of 200 pounds and a…

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Q: The probability that a person catches a cold during the cold and flu season is 0.4. Assume that 10…

A: According to the given information, we have Probability, p = 0.4 Sample size, n = 10

Q: The mean annual cost of automobile insurance is $939. Assume that the standard deviation is $245.…

A: Given, Mean(μ)=939 $ standard deviation(σ)=245 $ sample size(n)= 400 find P(939-25 < x¯ <…

Q: A prototype automotive tire has a design life of 38,500 miles with a standard deviation of 2,500…

A: Given A prototype automotive tire has a design life which follows a normal distribution with  Mean…

Q: The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard…

A: Solution: 69. Let X be the length of human pregnancies. From the given information, X follows normal…

Q: A packet of chocolate bar's content is regularly distributed, with a mean of 250 grammes and a…

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Q: Assume that the heights of men are normally distributed with a mean of 71.3 inches and a standard…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: A certain brand of automobile tire hae a life expectancy that ie normally distributed with a mean of…

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Q: One year, professional sports players salaries averaged $1.8 million with a standard deviation of…

A: we have to find out givén  correct probability..

Q: The time required to complete a final examination of MATH 203 is normally distributed, with a mean…

A: Given : mean = μ = 80 Standard deviation = σ = 10

Q: The expected (mean) life of a particular type of light bulb is 1,000 hours with a standard deviation…

A: Given  Mean = 1000 hrs Standard deviation = 50 hrs To calculate probability for X > 1150 hrs

Q: In a certain population, let us assume that high school scr are normally distributed with mean of 74…

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Q: The average income in the city of Red Deer is $85,000 with a standard deviation of $20,000.  A…

A: It is given that the mean is $85,000 and the standard deviation is $20,000.

Q: The standard deviation of the lifespan of a certain brand of LED light bulbs Is 20 months. The…

A: We have given that. 1) X~N( μ , ?^2 )   μ =147 , ? =20 , n=70   Z-score =( x - μ )/?

Q: Adult male heights are normally distributed with mean 72.33 inches and a standard deviation of 3.25…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Suppose that people heights (in centimeters) are normally distributed, with a mean of 170 and a…

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Q: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

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Q: The average weight of an adult male in one state is 172 pounds with a standard deviation of 16…

A: Given datamean=172standard deviation=16n=36

Q: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

A: Random variables are of 2 types, discrete and continuous, a normal distribution is a continuous…

Q: The tip percentage at a restaurant has a mean value of 18% and a standard deviation of 6%. What is…

A: Given Information: μ=18 , σ=6 and n=15

Q: Suppose teachers in a certain state earn an annual salary of $54,600, on average. The standard…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: The tip percentage at a restaurant has a mean value of 18% and a standard deviation of 6%. What is…

A: Obtain the approximate probability that the sample mean tip percentage for a random sample of 40…

Q: The mean height of Grade III pupils is 138 cm with a standard deviation of 8 cm. If a sample of 30…

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Q: A population has a mean of 80 and a standard deviation of 7. A sample of 49 observations will be…

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Q: A prototype automotive tire has a design life of 38,500 miles with a standard deviation of 2,500…

A:

Q: Assume that women’s heights are normally distributed with a mean of 63.6 inches and a standard…

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Q: A test has a mean score of 150 and a standard deviation of 12. Scores are normally distributed. What…

A: Let X denote the test score and follows normal distribution with mean of μ=150 and standard…

Q: A population has a mean of 80 and a standard deviation of 7. A sample of 49 observations will be…

A: It is given that the mean is 80 and the standard deviation is 7.

Q: standard

A: Given: Mean, μ=80 Standard deviation, σ=7 Sample size, n=49 To find: P (X>82) Using normal…

Q: A certain brand of automobile tire hae a life expectancy that ie normally dietributed with a mean of…

A: According to the given information, we have Mean = 20000 Standard deviation = 2500

Q: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of…

A: Given information Mean(µ) = 109 inches Standard deviation(σ) = 10 inches n = 25

Q: The average height of flowering cherry trees in a certain nursery is 10.5 feet. If the heights are…

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Q: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

A: Given, Mean μ = 180Standard deviation σ = 24Sample size n = 64

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Let X denote the IQ scores of adults. Given that X follows N(mean = 105, SD = 20), then Z = (X -…

Q: The number of hours it takes for symptoms of a viral disease to show from the time of infection…

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Q: 10 percent of the students in a class of 100 are planning to go to graduate school. The standard…

A: It is given that n=100 and p=0.10.

Q: An audit finds that the dollar amounts of invoices have a mean of $1,662 and a standard deviation of…

A: we have given that mu=1662 ,sigma =302 , n=50  X~N(mu=1662 , sigma^2=302^2) X is a normally…

Q: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of…

A: Mean(µ) = 88Standard deviations (σ) = 10 X ~ N (µ, σ )= N(88, 10)

Q: Major league baseball salaries averaged $1.5 million with a standard deviation of $ 0.8 million in…

A: From the provided information, the average salary (µ) = $ 1.5 millionThe standard deviation (σ) =…

Q: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

A: Given Data: Let X represent the random variable Mean=180 SD=24 n=64

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

A: It is given that the,  that the readings on the thermometers are normally distributed with a mean of…

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Q: John drives to work each morning and the trip takes an average of µ = 38 minutes. The distribution…

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Q: The light bulbs produced by a generic manufacturer have a stated average life of 1,146 hours. Assume…

A: Given that the mean is 1146 and the standard deviation of 100 hours. That is, μ=1146 and σ=100 Let X…

Q: The reading speed of second grade students in a large city is approximately​ normal, with a mean of…

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Q: A normal population has a mean μ = 32 and standard deviation σ = 10. What is the probability that a…

A: Solution-: Let, X= be the random variable Given: We find,

Q: The gestation period of humans follows a normal distribution with a mean of 266 days and a standard…

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Q: Assume that the heights women are normally distributed with a mean of 63.6 inches and a standard…

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Q: In a population of statistics students it was found that the mean score on the final is 150 with a…

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

A: As per the bartleby policy I have answered the first question. Please repost the 2nd question for…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.