A sample of 64 account balances from a credit company showed an average daily balance of $940. The standard deviation of the population is known to be $200. In a test to determine if the mean of all account balances is less than $1,000, a lower tail test, the Excel software could be used to determine the p - value using which of the following formula? =T.DIST(-2.4,63,TRUE) =NORM.S.DIST(-2.40,TRUE) =NORM.S.INV(0.05) O =T.INV(0.05,63)

Q: A cement manufacturer claims that the average weight of his product is 40 kgs. with a standard…

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Q: A National Center for Health Statistics study states that the mean height for adult men in the…

A: Given information: μHeight=69.4σHeight=3.1μIQ=100σIQ=15 A) xHeight=75 Apply normal distribution:…

Q: An environmental biologist recorded the 20 24 22 20 numbers of snail eggs in the first clutch…

A: If we look at both the graphs provided (at 220 C and 250 C ) , the curves are skewed but the data is…

Q: The height of an adult male is known to be normally distributed with of mean of 69 inches and a…

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Q: The average high temperature for Atlanta in January is 53 degrees with a standard deviation of 8.2…

A: INTRODUCTION :  To measure the variability of which series is consistent than any other then the…

Q: The quality control department of Cool Cola tested the bottle fillers and found them to fill 500 mL…

A: Measure of central tendency measures the central or average value of a dataset. Mean, median and…

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 242 cm.…

A: Thus, the standard z-score for the tallest man is 10.51.

Q: The mean monthly rent for apartments in a certain city is $930 with a standard deviation of $350.…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 221…

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Q: A livestock company reports that the mean weight of a group of young steers is 1157 pounds with a…

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Q: If on an average 8 ships out of 10 arrive safely at a port, find the mean and standard deviation of…

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Q: In a recent study, the serum cholesterol levels in men were found to be normally distributed with a…

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Q: A sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. What…

A: We have given that,  Let X be the GPA scores from normal distribution with average or mean (μ) =…

Q: A painter purchases two types of paints, paint A and paint B. The amount of paint A purchased per…

A: Expected amount spent by firm on both types of paints combined is as follows…

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 233 cm.…

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Q: The heights cleared by two athletes in a high jump event are recorded bellowed. Athlete X: 1.86 m,…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A manufacturer of calculator batteries claims that the mean length of life for its battery is 500…

A: The empirical graph is, The random variable X is defined as the length of life for its battery. The…

Q: Determine which score corresponds to the higher relative position by calculating the z- score for…

A: Calculating The standard normal variate i.e. z-score for 82 marks with mean =70 and standard…

Q: A study at the University of Colorado at Boulder shows that running increases the percent resting…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: A business owner usually requests freelancers to work with, where he pays his freelancers an average…

A: From the given information, the mean is 15.90 and standard deviation 1.50.

Q: A previous study claims that the average time a teenager spends browsing his social media accounts…

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Q: In a factory producing glasses, the weights of glasses are known to have a mean of 160 grams. It is…

A: By looking at a Z table we can conclude that Q1 and Q3 are each .6745 standard deviations from the…

Q: Soum that the red blood cell counts of women are normally distributed with a mean of 4.577 million…

A: Solution: Let X be the red blood cell counts of women. From the given information, X follows normal…

Q: Find the proportion of their long distance calls that is between 4.0  minutes and 5.5 minutes?

A: Let X be a random variable which denotes lengths of the long distance calls.…

Q: Addison earned a score of 390 on Exam A that had a mean of 450 and a standard deviation of 25. She…

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Q: The annual incomes of middle management employees is approximately normally distributed with a mean…

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Q: Christian earned a score of 80 on Exam A that had a mean of 200 and a standard deviation of 40. He…

A: Here we need to compute the marks Christian must obtain in exam B such that it's equivalent to exam…

Q: On a construction site, the amount of dirt scooped by a forklift machine is normally distributed…

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Q: ccording to a survey on part-time workers, the average base salary for women in sales is higher than…

A: Let X denotes the average base salary for men  Given: = $2500/month Converting it to 12 moth period,…

Q: A livestock company reports that the mean weight of a group of young steers is 1180 pounds with a…

A: GivenMean(μ)=1180standard deviation(σ)=90

Q: the golf scores for a school team were normally with a mean of 68 and a standard deviation of 3. Use…

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Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 243…

A: Given data μ = 173.68σ = 7.46Tallest man height is = 243Shortest man height is = 125.9

Q: A recent study found that 61 children who watched a commercial for potato chips featuring a…

A: Denote μ1, μ2 as the population mean weights of potato chips eaten by children who watched the​…

Q: A man works for a travel agency whose employees had an avergae income of Php32,000 with a standard…

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Q: Use z scores to compare the given values. The tallest living man at one time had a height of 225 cm.…

A: Normal distribution in the center is generally denser and basically less dense at the tails. There…

Q: Assume that males have a mean hieght of 69.1 in. with a standard deviation of 2.9 in., and females…

A: Given  that  males have a mean height of 69.1 in. with a standard deviation of 2.9 in. and  female…

Q: A small grocery store, on average, has daily sales of Php28, 176.44. The standard deviation of sales…

A: Solution: Let X be the daily sales. From the given information, µ = Php 28,176.44 and σ = Php 1500.

Q: The mean age of clients at a local nail salon is 33.9 years. If 7.21% of the clients are older than…

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Q: A medical statistician wants to estimate the average weight loss of people who are on a new diet…

A: Solution: Given information: σ= 10  Population standard deviation E= 2 Margin of error C= 0.9=90%…

Q: A student scored 76 on a general science test where the class mean and standard deviation were 82…

A: For Science x¯=82s=8x=76 z=x-x¯s=76-828=-0.75

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of…

A: From the provided information, Mean (µ) = 174.87 cm Standard deviation (σ) = 7.57 cm

Q: The hourly pay of a sample of nurses is approximately normal with a mean of $36.25 and a standard…

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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 major credit card company has determined that the amount its customers charge on their accounts is…

A: Solution: Let X be the number of customers charge on their accounts. From the given information, X…

Q: The standard deviation of the base price of a certain type of all-terrain vehicle is equal to $322.

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Q: A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A sample…

A: Given that  Claim :  Mean tuna consumption by a person is 3.6 pounds per year Sample size (n) = 90…

Q: The time is takes a studen to walk from the dorn to the chemistry lab follows roughly a Normal…

A: Mean(µ) = 20 Standard deviations (σ) = 3 X ~ N (µ, σ )= N ( 20, 3)

Q: two stores at sm downtown are selling batteries for cell phones. store A claims an average battery…

A: The objective is to find out which battery is more likely to last all day.

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 245 cm.…

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Q: An article published in the American Journal of Public Health that reported the relation between…

A: Mean = 173.2 SE = 0.2 n = 1243