Find the z-score given the cumulative probabilities, mean and standard deviation in brackets a) NORMINV(0.99,490,61) b) NORMSINV(0.99)
Q: company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
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: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean…
A: a)It is given that the mean is 21 and standard deviation is 5.
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Given that, A company produces steel rods. The lengths of the steel rods are normally distributed…
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: The random variable length of the steel rods follows normal distribution. The population mean is…
Q: The weight of cement bags considered to be normally distributed with mean of (50 + (student number *…
A: Solution
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: It is given that the mean is 224.2, the standard deviation is 1.2 and the sample size is 22.
Q: P(M> 113.4-cm) = %3D
A:
Q: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean…
A: It is given that the amount of time an athlete uses a stair climber follows normal distribution with…
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Given : mean = μ = 206.7 standard deviation = σ= 1.5 n = 9 μM = 206.7 σM=σn σM=1.59 σM=0.5
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: GivenMean(μ) =265.2standard deviation(σ)=0.9sample size(n) =19
Q: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Given information: The distribution is normal. μ=183.6σ=2.5n=19 P(M>182.8)=?
Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 30…
A: normal distributionμ = 30σ = 3P(22.4<x<33.5) = ?
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: The lengths of the steel rods are normally distributed with a mean of 148.4-cm and a standard…
Q: ounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 21…
A: It is given that Mean = 21Standard deviation = 5
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Let X denote the length of steel rod with a mean μ=110.3 cmand standard deviation σ=2 cm.X follows…
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Step 1:Step 2: Step 3: Step 4:
Q: company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: We have given that X~N(mu , sigma) mu=260.7 , sigma =1.4 , n = 25 Z-score = (x -…
Q: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean…
A: Step 1: State the given information.Data are normally distributed.Mean, μ: 21 minutesStandard…
Q: Lavelle wears socks that are either red, white, or black. If there's a 28% chance that he'll wear…
A: There are 3 type of socks. White, red and black. 28% chance of he wear a white and 42 chance that he…
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Given information Mean µ = 96.1 cm Standard deviation σ = 1.1 cm n = 30
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Given that, μ=258.5,σ=2.3n=30 The probability that a average length of a randomly selected bundle…
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Solution: Let X be the length of the steel rod. From the given information, X follows normal…
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: Regarding the estimate of the conditional standard deviation,σ,, which of the three sums of squares…
A: Justification:Estimate of the conditional standard deviation:
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A: Given information- Population mean, μ = 225.3 cm Population standard deviation, σ = 1.8 cm Sample…
Q: Find the probability that the average length of a randomly selected bundle of steel rods is between…
A: Given that X ~ Normal (mean = 202.8 , standard deviation = 0.7) n = 29
Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…
A:
Q: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean…
A:
Q: The average full-sized front-loaded energy star clothes washer uses 15 gallons of water per load.…
A: The mean is 15 and the standard deviation is 3.
Q: Regarding the estimate of the conditional standard deviation,s,, which of the three sums of squares…
A: Estimate of the conditional standard deviation:
Find the z-score given the cumulative probabilities,
a) NORMINV(0.99,490,61)
b) NORMSINV(0.99)
Step by step
Solved in 3 steps with 2 images
- A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 111.7-cm and a standard deviation of 1.4-cm. For shipment, 7 steel rods are bundled together.Find the probability that the average length of a randomly selected bundle of steel rods is between 111.5-cm and 112-cm.P(111.5-cm < M < 112-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 21 minutes and a standard deviation of 6 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 17 minutes, (b) between 21 and 28 minutes, and (c) more than 30 minutes. (a) The probability that a randomly selected athlete uses a stairclimber for less than 17 minutes is (Round to four decimal places as needed.) (b) The probability that a randomly selected athlete uses a stairclimber between 21 and 28 minutes is (Round to four decimal places as needed.) (c) The probability that a randomly selected athlete uses a stairclimber for more than 30 minutes is (Round to four decimal places as needed.)The average electricity bill for residents of Seaside is $72.54 with a standard deviation of $9.66. Assume the population of electricity bill amounts are normally distributed. What is the probability that a randomly selected electricity bill for a resident of Seaside will be between $60 and $80? Show how you calculated your result here (type in what you typed on your calculator or computer, the function used on the calculator/computer with value input, etc) Calculation: ____________ Now type in your final simplified or rounded answer, if necessary round your answer to four decimal places. P( $60 < x < $80 ) = _____________
- A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 254.8-cm and a standard deviation of 1.3-cm. For shipment, 8 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is between 253.9-cm and 254-cm. P(253.9-cm < M < 254-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.The ages of students in an evening stained glass making class at a community college are normally distributed with a mean of 28 years and a standard deviation of 3.5 years. Determine the probability that a randomly selected student in this class is between the ages of 23 and 30. 17. (3)A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 148.4-cm and a standard deviation of 2.3-cm. For shipment, 16 steel rods are bundled together.Find the probability that the average length of a randomly selected bundle of steel rods is greater than 148.9-cm.P(M > 148.9-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
- A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 225.1- cm and a standard deviation of 0.6-cm. For shipment, 18 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 224.9-cm. P(M> 224.9-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z- scores rounded to 3 decimal places are accepted.A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 249.5-cm and a standard deviation of 2.1-cm. For shipment, 11 steel rods are bundled together.Find the probability that the average length of a randomly selected bundle of steel rods is between 250.6-cm and 251.5-cm.P(250.6-cm < M < 251.5-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 269.6-cm and a standard deviation of 2.1-cm. For shipment, 8 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is between 267.9-cm and 272-cm. P(267.9-cm < M<272-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. Ouestion Lloln
- A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 126.7-cm and a standard deviation of 2.4-cm. For shipment, 16 steel rods are bundled together.Find the probability that the average length of a randomly selected bundle of steel rods is greater than 127.4-cm.P(M > 127.4-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 217.5-cm and a standard deviation of 2.5-cm. For shipment, 30 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 216.8-cm. P(M > 216.8-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. Question Help: Message instructor DPost to forum Submit Question P Type here to search O 40 144 40 ort se %23 3 24 4. 7. 8. Q R. T. Y. F K L C V. fn alt ctri TRE