Assuming we are working with a random variable that follows a normal distribution, which of the following is true? 1. To compute the probability of a particular range of values, we should use invNorm; to find a value given a probability, we should use normalcdf 2. To compute the probability of a particular range of values, we should use invNorm; to find a value given a probability, we should use normal

Q: Ms. Berry is concerned about the average amount of food Fred, the elephant, eats each day. Zookeeper…

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Q: An electrical appliance made by company A has an average life of 2500 hours, with a standard…

A: Given that  An electrical appliance made by company A has an average life of 2500 hours, with a…

Q: There are two machines available for cutting corks intended for use in wine bottles. The first…

A: From the provided information, For first machine; Mean (µ1) = 3 Standard deviation (σ1) = 0.10 For…

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A: The correct option is B: The expected value is -6.5, and the standard deviation is…

Q: snip

A: Given: Average renovation time is, μ1=4 weeks. Standard deviation of renovation is, σ1=1 week.…

Q: The average number of work emails received in a day is 27.  If the variance is known σ2 = 3.45…

A: GivenMean(μ)=27vatiance(σ2)=3.45standard deviation(σ)=3.45=1.8574

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A: Given  -   Probability of success = p = 25% = 0.25                 Probability of failure  = 1 - p =…

Q: Since the heights of people in USA is normally distributed, what is the probability that an…

A: Given data Normal distributionP(x>μ+2σ) = ?

Q: A test score in the top 2% is required. The test is designed to have a mean of 100 and a std dev. of…

A: It is given that the test is normally distributed with mean 100 and standard deviation is 15. The…

Q: The average height of all the workers in a hospital is known to be 66.7 inches with a standard…

A: Let  X be the random variable from normal distribution with mean (μ) = 66.7, standard deviation (σ)…

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

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Q: Determine if the finite correction factor should be used. If​ so, use it in your calculations when…

A: In a sample of 700 gas​ stations, the mean price for regular gasoline at the pump was $2.884 per…

Q: Please help me answer

A: Question 1To find the variance, we need to use the formula below. Formula:Variance=∑[x2×P(x)]−μ2…

Q: You may need to use the appropriate appendix table or technology to answer this question. The state…

A: Note :As per the Bartleby guildlines we have to solve first three subparts and rest can be…

Q: Manufacture of a certain component requires three different machining operations. Machining time for…

A: The question is about normal distributionGiven :Mean machining time of Machine 1 (  ) = 30 minStd.…

Q: Manufacture of a certain component requires three different machining operations. Machining time for…

A: given data μ1 = 20 minμ2 = 30 minμ3 = 15 minσ1 = 2 minσ2 = 1  minσ3 = 1.3 minP( total time <1…

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A: Let X1,X2,....,X64 be the samples from this population. Sample mean, X = 164∑i=164Xi Xi are normally…

Q: f z

A: As,  z is a standard number variable, so Mean (μ) = 0 Standard Deviation (σ) = 1 So, Z = z-01~N(0,1)

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Q: nee udents in a primary school are being tested to see how good their fine motor skills are. The to…

A: Given that.   X~N( μ , ?)   μ=14     , ?=4.6   Z-score =( x - μ )/?

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A: Given information for State of California: Mean, μ=22. Standard deviation, σ=4. Sample size, n=31.…

Q: (d) What is the variance of the time it takes for a person to move? (e) Among ten people, what is…

A: Given that The annual probability of moving is 0.17

Q: The average age of residents in a large residential retirement community is 69 years with standard…

A: From the provided information, Mean (µ) = 69 years Standard deviation (σ) = 5.8 years X~N (69, 5.8)…

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.