If x the mean of 12 determinations = 9.79, and μ the true value = 9.03, find out whether or not this result is significant provided the standard deviation(s) is 0.18.

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270.6…

A: Given data,μ=270.6σ=16.9P(-z<Z<z)=0.50

Q: 18. For a population with a standard deviation of o = 12, a score of X = 115 corresponds to z…

A:

Q: The mean wingspan of a sample of 31 birds of a particular species is 30 inches.  The standard…

A: Sample size n =31 Sample mean=30 Population standard deviation =4

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268.5…

A: It is given that the length of pregnancies is normally distributed with mean 268.5 and standard…

Q: A sample has a mean of M =75 and a standard deviation of s = 15 . Find the z-score for each of the…

A: Given that, Mean (M) =75 Standard deviation (s) = 15

Q: A forester measured the trees in a large woods up for sale. He concluded that the diameter of the…

A: The objective of this question is to identify the correct equation that can be used to find the…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261.5…

A: Given data, Mean=261.5 sd=17.6 In what range would you expect to find the middle 68% of most…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268.7…

A: Mean = 268.7 Standard deviation= 13.8 days  95% confidence

Q: In a​ country, the mean time served by prisoners released from prison for the first time is 31.5…

A: Mean time = 31.5Standard deviation = 16.3

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: From generation to generation, the mean age when smokers first start to smoke varies. However, the…

A:

Q: Suppose the mean of a math exam score is 70 with a standard deviation of 12. If each score is…

A:

Q: researcher in a large university claimed that the mean health care expenses differ from the national…

A: From the given information, Consider,  μ=$1570n=50x=$1680s=$180α=0.05

Q: The data has a mean of 27 and a standard deviation of 3.8, rounded to the nearest tenth. How many of…

A: Given that  a data has a mean μ = 27                                  standard…

Q: A researcher wishes to see if there is a difference in the manual dexterity of athletes and that of…

A: Sample mean for athletes x¯1=89 Sample mean for band members x¯2=95 Standard deviation σ=7.4 .…

Q: A distribution of values is normal with a mean of 141.6 and a standard deviation of 44. Find P65,…

A: Given Information: Mean μ=141.6 Standard deviation σ=44 To find Percentile P65: Using a standard…

Q: Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard…

A: Standard normal distribution:The normal distribution has mean as 0 and standard deviation as 1.The…

Q: (b) A scientific group claims that the true population mean u is more than 7 meters. (i) What is the…

A: Givenclaim is that the true population mean μ is more than  7 metersMean(x)=7.3sample size(n)=16σ=1

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 267.3…

A: The given question requires accurate results, Hence I will use Excel to solve this question.…

Q: The length of adult male dolphins is normally distributed with an unknown mean µ. By some previous…

A: The random sampling distribution of a statistic is approximately normal and the values given in the…

Q: The contents of 33 cans of Coke have a mean of x¯=12.15 and a standard deviation of s=0.12. Find the…

A: Given values, n = 33x¯ = 12.15s = 0.12μ=12

Q: In a population of exam scores, a score of X = 88 corresponds to z = 2 and a score of X = 79…

A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

Q: Although, it is commonly believed that the mean for the human body temperature is 98.6 F, others…

A: The objective of this question is to test the hypothesis that the mean body temperature of humans is…

Q: I also need the standard deviation for the above question.

A:

Q: On a recent calculus exam, a class mean was 75 with a standard deviation of 3.4. Calculate the…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 3.4 Let X be a random variable…

Q: Suppose the mean of a math exam score is 64 with a standard deviation of 10. If each score is…

A: Given: mean=64             S. D =10

Q: What type of question is this what formula is used?   Given a sample with a mean of 151 and a…

A: Given,   Mean = 151 Standard deviation = 27

Q: On an exam with a mean of M=39, you obtain a score of X=35. Would you prefer a standard deviation…

A: Given that, Mean M =39 X=35, prefer a standard deviation of s= 2 or s=8:

Q: If the mean score on the final exam is 70 with a standard deviation of 10 then the test score of a…

A: Given Mean =70 Standard deviations=10 Z=-1.5

Q: The heights (in inches) of males in the United States are believed to be approximately Normally…

A:

Q: Suppose the mean of a math exam score is 70 with a standard deviation of 20. If each score is…

A: Determine the new value of mean. The new value of mean is obtained below as follows:   From the…

Q: A random sample of men's weights have a sample mean of x¯=182.3 pounds and sample standard deviation…

A:

Q: c. Find the minimum number for the upper quarter of percent of fat calories.

A: The mean is 38 and the standard deviation is 10.

Q: The human population has a mean IQ score of µ = 100 and a standard deviation of σ = 15. Find the…

A: The normal distribution is the most useful theoretical distribution for continuous variables.…

Q: x=200,μ=225,σ=10 x=1,μ=−1,σ=2 x=0,μ=−400,σ=200 x=12,μ=21,σ=3 The x value of ? lies the greatest…

A: Given information are,Let, (a) x=200, μ=225, σ=10(b) x=1, μ=−1, σ=2(c) x=0, μ=−400, σ=200(d) x=12,…

Q: If the mean of x bar is equal to 15.3 and the standard deviation of x bar is 1.20, what is the…

A:

Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30.…

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…

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.