A small grocery store, on average, has daily sales of Php28, 176.44. The standard deviation of sales is Php1500. On a Tuesday, the store sold Php34,083.30 worth of goods. Find the z-score for Tuesday’s sales.

Q: A biologist is studying rainbow trout that live in a certain river and she estimates their mean…

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Q: On a nationwide math test, the mean was 75 and the standard deviation was 7. If Roberto scored 70,…

A: The z score indicates how many standard deviations that a data points away from the mean. It can be…

Q: The average 20- to 29-year-old man is 69.6 inches tall, with a standard deviation of 3.0 inches,…

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Q: a department store has daily mean sales of $28,372.72. The standard deviation of sales is $2000. On,…

A: The mean and standard deviation of daily sales is : x=$28372.72s=$2000 For Tuesday, the sales were…

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: Of the 200 American film enthusiasts, the average age is: 30 years, while the standard deviation is…

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

Q: In a certain​ city, the average​ 20- to​ 29-year old man is 69.4 inches​ tall, with a standard…

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Q: A livestock company reports that the mean weight of a group of young steers is 1154 pounds with a…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Isn't here the standard deviation equal to 4, not 2, as the tutor wrote?

A: Solution-: Given: μ=-3,σ=4 We want to find, P(0<X<2)=? Draw the picture.

Q: On a nationwide math test, the mean was 57 and the standard deviation was 10. If Roberto scored 80,…

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Q: he sample mean for a recent introductory psychology test was 78, and the standard deviation was 3.…

A: Given Information: Mean = 78 Standard deviation = 3 Student received a score of 82 i.e., X = 82…

Q: The mean grade on a science test was 79 and there was a standard deviation of 6. If your sister…

A: The z score explains the deviations of the observations from the mean. It is calculated using the…

Q: During 1 week, an overnight delivery company found that the weights of its parcels were normally…

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Q: A history class has 95 members. If there is a 22% absentee rate per class meeting , find the mean…

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Q: The mean grade on a science test was 79 and there was a standard deviation of 6. If your sister…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ)= 79,…

Q: The average net sales per year of the products in 60 branches of the DG Company is Php 85 million…

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Q: On a nationwide math test, the mean was 63 and the standard deviation was 10. If Roberto scored 85,…

A: GivenMean(μ)=63standard deviation(σ)=10score(x)=85

Q: find the standard deviation

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: On a spelling test, the standard deviation is equal to 0.94. What does this mean

A: We know that the Standard deviation tells us that how much data is scattered around the mean value…

Q: After surveying 625 potential voters polled, you find out that 325 support candidate X and 300…

A: Given information: A total sample of 625 potential voters. 325 out of 625 support candidate X. 300…

Q: The U.S. Bureau of Labor statistics reports that the average annual expenditure on food and drink…

A: Given Information: Mean μ=$5700 Standard deviation σ=$1500 To find the percentage of families who…

Q: the length of a certain species of fish were found to be normally distributed. the mean length is 72…

A: Any assumption about the parameter or probability function is called a hypothesis. Given data are…

Q: If the range of a data set is 56, find the approximate value of the standard deviation, using the…

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Q: If the mean height of bonsai trees is 42 cm and 95% of the trees are between 12cm and 72cm. The…

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Q: The annual commissions per salesperson employed by a retailer of mobile communication devices…

A: Obtain the Z-score for the random variable $32000.   The Z-score for the random variable $32000 is…

Q: The Miramar Theater chain has studied its movie customers to determine how much money they spend on…

A: Given : Mean = μ = 200 Standard deviation = σ = 55

Q: A livestock company reports that the mean weight of a group of young steers is 1150 pounds with a…

A: μ=1150σ=87  =P1050<x<1250

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: What is the deviation?

A: Deviation is Difference between the Given observed value and One fixed Value...

Q: On a nationwide math test, the mean was 57 and the standard deviation was 4. If Roberto scored 90,…

A: Formula for z-score is

Q: The typical college freshman spends an average of ?=150 minutes per day, with a standard deviation…

A: Solution: Let X be the time on social media. From the given information, X follows normal…

Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

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Q: In a recent survey, 80% of the community favored building a police substation in their neighborhood.…

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Q: The mean height of a population of men is 70.8 inches and the standard deviation is 3.2 inches. What…

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Q: a nationwide math test, the mean was 60 and the standard deviation was 7. If Roberto scored 85, what…

A: Given data,Mean μ=60sd    σ=7 If Roberto scored 85z-score=?

Q: A manufacturing company wants to know if the product waste that they produce complies with the…

A: Given information Sample mean x̅ = 188 kg Population mean µ = 200 kg Sample size = 30 Standard…

Q: If the range of a data set is 64, find the approximate value of the standard deviation, using the…

A: Given information- Range = 64 We have to find the approximate value of the standard deviation using…

Q: The average rate per hour of an employee in a fastfood chain is Php 38 with a standard deviation of…

A: Given  Population mean μ=38, standard deviations σ=5  Let X be the rate per hour of an employee in a…

Q: A maths class has 100 members. If there is a 15% absentee rate per class meeting , find the standard…

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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: Jared has a mean of 74 on his quizzes, with a standard deviation of 7. On his most recent quiz, he…

A: If the z-score lies within 2 standard deviation away from the mean, then the score is not unusual…

Q: A history class has 75 members.  If there is a 12% absentee rate per class meeting , find the…

A: Given data  P(absent) = p = 0.12  So q= 1-p = 0.88 Sample size (n)= 75 X = no.  of student absent We…

Q: An agronomist measured the height of 134 canola plants. The mean height was 214 cm and the standard…

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Q: The US mean height for adult men is  = 68.5 inches, with a standard deviation of  = 3 inches. The…

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Q: The daily water usage per person in Davao City is normally distributed with a mean of 20 gallons and…

A: Empirical Rule : The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is…

Q: The average 20-to 29-year-old man is 69.6 inches tall, with a standard deviation of 3.0 inches,…

A: Solution: Let X be the height of 20 to 29 year old man and Y be the height of the 20 to 29 year old…

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: For the layperson, explain what the standard deviation of 2.2 means compared to the standard…

A: The standard deviation of women for tallest acceptable height is 2.2. It can be explained as, each…

Q: The daily water usage per person in Davao City is normally distributed with a mean of 20 gallons and…

A: Given that, Mean = 20 Standard deviation = 5