Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean μ=293 days and standard deviation σ=21 days. Complete parts​ (a) through​ (f) below. d) What is the probability that a random sample of 28 pregnancies has a mean gestation period of 285 days or​ less?   The probability that the mean of a random sample of 28 pregnancies is less than 285 days is approximately nothing. ​(Round to four decimal places as​ needed.)

Q: The height X of giraffes is normally distributed with mean μ=16.7 feet and standard deviation σ=1.8…

A: According to the given information, we have Mean = 16.7 Standard deviation = 1.8 Sample size, n = 27

Q: "Ch6. Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=31 minutes and a…

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=28 minutes and a…

Q: Assume the random variable X is normally distributed, with mean u=57 and standard deviation o = 7.…

A: The random variable  X is normally distributed The population mean is 57. The population standard…

Q: Ghughesh.9

A: The objective of this question is to find the value of 'a' in the probability function P(Z>a)…

Q: The length of human pregnancies from conception to birth follows a normal distribution with a mean…

A: The random variable X follows normal distribution. The population mean is 260. The population…

Q: distribution with values between 15 and 29. What is the mean and standard deviation of X?…

A:

Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: X¯ ~ N(μx¯ , σx¯) μx¯=μ=142 σx¯=σn=1349=1.86 N = Normal distribution

Q: Suppose that "duration of any attempt in an effort to score (X)" by either team in college soccer…

A: Given: Let X be a random variable that represents the duration of any attempt in an effort to score.…

Q: Vehicle speeds at a certain highway location have a mean of 100 kmh and a standard deviation of 10…

A: Given,sample size(n)=25sample mean(x¯)=100standard deviation(σ)=10α=1-0.95=0.05α2=0.025Z0.025=1.96…

Q: An unknown distribution has a mean of 40 and a standard deviation of 8. A sample size of 50 is drawn…

A: Given Information is -Sample size, .Mean, .Standard deviation, .

Q: Suppose the number of games in which chess players play during their career is normally distributed…

A:

Q: he amount of time spent by a statistical consultant with a client at their first meeting is a random…

A: Given that, The amount of time spent by a statistical consultant with a client at their first…

Q: n the country of United States of Heightlandia, the height measurements of ten-year-old children are…

A: It is given that the mean is 54.6 and standard deviation is 1.5.

Q: We would expect about 68% of the seniors to score between ______ and _______.

A: Let , X→N(μ=460 , σ=76) Our aim is to find the bout 68% of the seniors to score between ______ and…

Q: The weight of elephants at a zoo in Pittsburgh has a population mean of 5.3 tons and population…

A: Given Mean(μ)=5.3standard deviation(σ)=1.2sample size(n)=12

Q: Suppose it is known that the average score of all high school seniors taking a national test of…

A: Chebyshev's theorem and empirical rule are used to calculate the percentages of data lies within…

Q: Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs.…

A: Given information: μ=245.7σ=34.5sample size, n=32

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: Ch6. "A carpet manufacturing company is comparing the tensile strengths of two different types of…

A:

Q: Suppose that the amount of time that students spend studying in the library in one sitting is…

A: Let a random variable, X~N(μ,σ2), the assumed z-score for a sample mean X¯ is, Z=X¯-μσndefined,…

Q: 4. Assume that the life of laptop brand X is normally distributed. It was found that the average…

A: As per company guidelines I solved only first question .thank you  Given X~μμ,σAverage μ= 5 year…

Q: The scores on a test are normally distributed with a mean of 100 and a standard deviation of 20.…

A:

Q: Assume that the number of days from conception to birth is normally distributed with a mean of 271…

A: Given that  Mean = 271, SD = 4 X = 238

Q: Suppose the scores of students on an exam are normally distributed with a mean of 210 and a standard…

A: Given  mean of 210 and a standard deviation of 54.

Q: Amos and Andy are students with the same ability. The potential grade that each of them would…

A: Let  X be the potential grade that Amos would receive on the test and Y be the potential grade that…

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.