These dates are from a normal distribution  find the interval of 85% of trust with these dates knowing that the Poblacion deviation is 4  103 100 103 110 105 101 101 106 105 101 108 100 103 103 105 100 102 102 101 101 101 109 106 107 108 107 108 110 103 106 106 110 103 110 106 108 109 104 110 108 109 103 102 108 100 107 110 106 102 103 100 107 106 102 110 110 109 106 106 108 108 109 107 Write the answer like these form (34.56,43.45)

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Let "X" be the exam scores.

Q: A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was…

A: The mean test score is 1463 and standard deviation is 315. The z-score for 1860 is,…

Q: A set of data items is normally distributed with a mean of 500. Find the data item in this…

A:

Q: A survey of 1000 adults were asked how much they spend in preparation for personal travel each year.…

A: As per the Bartleby guildlines we have to solve first question and rest can be reposted.... Given…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: It is given that: For the Accuplacer test, Meanμ1=40 Standard deviationσ1=9 For the GPAs,…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: The mean of the Accuplacer test,  The standard deviation of the Accuplacer test, The mean of High…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Unusual value: The Z-value is said to be Unusual if the Z is greater than 2 or less than –2. From…

Q: The average American gets a haircut every 39 days. Do college students get their hair cut less…

A: A hypothesis test is a statistical  method that uses sample data to evaluate a hypothesis  about a…

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Finding the value of z at lowest 14-1.08032 ( From Excel =NORM.S.INV(0.14))Finding the value of z at…

Q: A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was…

A: Z-score: The z-score value is a numerical measurement that describes a value of the relationship to…

Q: The average retirement age in America is 62 years old. Do small business owners retire at a…

A: a. The results shows that a survey of small business owners who have recently retired. The average…

Q: The weight of each baby born in a given week in provided in this table below. The mean weight is…

A: Given information: The mean weight is 7.25 pounds and the standard deviation is 1.03 pounds.

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Consider a random variable X that denotes the test scores. Therefore , X~Nμ=1527,σ=315

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: The distirbutions of the Accuplacer test and High School GPAs are given.

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are: Interval…

A: According to the given data, first form the following table:IntervalFrequency(fi)Midpoint(xi…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A:

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: It is given that the mean test score is 1,537 with standard deviation 315.The z-score for 1,930 can…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A:

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A:

Q: Find the standard deviation of the scores in the Math 130 test presented in Table 4.1, page 112.

A: Fist 130 Math score 78 55 85 83 40 93 64 82 95 58 73 75 73 87 94 91 61 61 58 64 81 95 55 73 56 88 91…

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

A: We have to find cat of velus  fine

Q: The scores on the Accuplacer test and high school GPAs are normally distributed. The accuplacer test…

A:

Q: A statistics instructor gives two different tests to measure students' aptitude for statistics.…

A: We have given that, Mean1 = 22 and standard deviation1 = 5. Mean2 = 71 and standard deviation2 =…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: The mean of the Accuplacer test, The standard deviation of the Accuplacer test, The mean of the High…

Q: Find the standard deviation for the grouped data.

A: Solution; Interval Frequency (f) midpoint(x) fx (x-x)2 f*(x-x)2 50-59 7 54.5 381.5 351.5625…

Q: a. Find the mean of the battery lives. hrs (Type an integer or a decimal. Round to two decimal…

A: Here we have given the data, We have to find the mean of the battery lives and also standard…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: Given information: Accuplacer μ=40, σ=8 High school μ=2.6, σ=0.20

Q: A set of final examination grades in an Introductory Statistics course is normally distributed with…

A: We have given that,  X be the test score with mean (μ) = 73 and standard deviation (σ) = 8 and The…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A:

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: It is given that Mean of test scores = 1537 And SD = 315

Q: A professor gives a test to her calculus students. The scores are approximately normally distributed…

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

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: The following information has been provided: Let X be random variable represents the standardized…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Let "X" be the exam scores.

Q: Although the samples are actually related, an investigator ignores this fact in the statistical…

A: Introduction: It is required to identify how the probability of a Type II error is affected in the…

Q: Mason earned a score of 226 on Exam A that had a mean of 250 and a standard deviation of 40. He is…

A: First find the standardised Z score and the make equivalency

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Let X be the random variable from normal distribution with mean (μ) = 100 and standard deviation (σ)…

Q: The following data give the speeds (in kilometer) as measured by radar of 5 selected cars traveled…

A: The data shows the speeds (in kilometer) as measured by radar of 5 selected cars traveled at NLEX.

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Given that.   X~N( μ , ?^2 )   μ=1466     , ?=315   Z-score =( x - μ )/?

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.