10. The mean life of a certain tire brand is 47,500 miles with standard deviation of 3,600 miles. a. Calculate the z- score for the life span of a tire that lasted 52,251 miles and 36,750 miles. b. Assume that the life span of tires is normally distributed. Find the interval of the life span of tires that lies within 2 standard deviations of the mean. c. Is a tire life span of 67,251 miles unusual?

Q: Blood sugars from eight patients in a rural clinic were recorded last summer by the local physician.…

A: Given blood sugar results are120,145,200,250,79,100,894,255sample size(n)=8

Q: Suppose that the exam scores of a statistics class were normally distributed with a mean of 94 and…

A: Solution: Let X be the exam score of a statistics class. From the given information, X follows…

Q: That is the difference between the weight of 5.33 lb and the mean of the weights? ow many standard…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A data set lists weights​ (lb) of plastic discarded by households. The highest weight is 5.37 ​lb,…

A: Measure of central tendency measures the central or average value of a dataset. Measured of…

Q: Suppose that the speeds of cars travelling on California freeways are normally distributed with a…

A: Provided information is: The speeds of cars travelling on California freeways are normally…

Q: A normal distribution of heights of adult women from a certain region has a mean of 68.7 inches and…

A:

Q: Suppose the temperature of healthy humans is approximately normal with a mean of 98.6 degrees and a…

A: Let X be the temperature of healthy humans is approximately normal with mean 98.6 degrees and a…

Q: Help please!!!! Parts a-d

A: Step 1: State the hypothesis:Given that:p = 92%p = 0.92Hypothesis:Null hypothesis: The proportion of…

Q: A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.64 lb, the…

A:

Q: The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal,…

A: (a) Draw the normal curve with the values from Z=–3 to Z=3 The below graph represents the normal…

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

A:

Q: A statistician uses Chebyshev's Theorem to estimate that at least 90 % of a population lies between…

A: We have to find correct answer for given data..

Q: obiles? Assume the samples are random and independer dard normal distribution table. dard normal…

A: Let μ1 denote the mean braking distance of automobile A. Let μ2 denote the mean braking distance of…

Q: Calculate the means and standard deviations of:1, 2, 3, 4, 5 a. O mean = 3; st. dev. = 1.414 O b.…

A: GIVEN DATA ,1,2,3,4,5HERE WE HAVE TO FIND OUT THE MEAN AND STANDARD DEVIATION FOR GIVEN DATA SCORE…

Q: Assume the mean length of a the female foot is roughly 9.58 in. with a standard deviation of 0.51…

A: From the given information, the mean of 9.58 and a standard deviation of 0.51. The  standard…

Q: Suppose that the mean of a set of data is 50.2 and the standard deviation is 4.2.  Assume that the…

A: Given  μ=50.2, σ=4.2, h=5.1  We want to find the new mean and standard deviation.

Q: e. Compare the results of parts (a) through (d) to those when the standard deviation is 0.030. When…

A: We have given that  e) standard deviation sigma =0.030 , ZSTAT= -1.24 and p-value =0.216 99%…

Q: Suppose that the weights of packages shipped by Atlas Shipping are normally distributed, with mean…

A:

Q: 13. Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: Assume mean and standard deviation of monthly expenses of households (in a city) are $210 and $40.…

A: μ=210σ=40130=210-240290=210-240∴k=2

Q: Suppose that the speeds of cars travelling on California freeways are normally distributed with a…

A: Given Information :  Suppose that the speeds of cars travelling on California freeways are normally…

Q: ith a mean of 110 and standard dev. of 15, find the 3 unique deviations to the left and right of the…

A: Deviations to the left   i) One standard deviation away from mean x = u - s x = 110 - 15 = 95   ii)…

Q: The mean composite score for seniors who took the SAT in 2010 was 1068. If the standard deviation…

A: From the provided information, Mean (µ) = 1068 Standard deviation (σ) = 100

Q: The heights of 1,000 college students are normally distributed about a mean value of 170…

A: Given, N=1000 μ=170 σ=7.2 Normal distribution: Z=x-μσ

Q: Suppose that the speeds of cars travelling on California freeways are normally distributed with a…

A: Given Information: The speeds of cars travelling on California freeways are normally distributed…

Q: IQ scores have a mean of 100 and a standard deviation of 15.  Kelly Stewart has an IQ 0f 130.…

A: Given data: Kelly Stewart has an IQ score, X = 130. Mean of IQ scores = 100 Standard deviation of IQ…

Q: To assess the air quality in a surgical suite, the presence of colony-forming spores per cubic meter…

A: {12,24,30}

Q: 3. The amount of beer Finnish people drink per year is normally distributed with 1 = 78.7 liters and…

A: We have to find correct answer for given data..

Q: Assume that a nomral distribution has a mean of 22 and a standard deviation of 7. What percentage of…

A:

Q: Calculate the means and standard deviations of:1, 2, 3, 4, 5 O a. mean = 3; st. dev. = 1.414 b. mean…

A:

Q: Calculate the means and standard deviations of:1, 2, 3, 4, 5

A: Let X denote the given observations. Then we have to calculate the mean and SD.

Q: Assume the birth weights at a local hospital have a normal distribution with a mean of 110 oz and a…

A: Let , random variable x follows normal distribution with mean μ and standard deviation σ 1) The…

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: Given,X1=42, σ1=4.7, n1=35X2=45, σ2=4.4 , n2=35and level of significance α=0.10

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.