What type of distribution does X follow? State the name and parameters. b. Compute the expected number of attempts needed before hitting the target. c. What is the variance and standard deviation of the number of attempts needed before hitting the target?

Q: Regarding the speeds at which cars pass through a checkpoint. Assume the speeds are normally…

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Q: Let x be a random variable representing the length of trout in a lake.  A friend claims that the…

A: We have given that,  Sample mean length (x̄) = 19.4 and sample standard deviation (s) = 3.8 and…

Q: Regarding the speeds at which cars pass through a checkpoint. Assume the speeds are normally…

A: Given Information: Assume the speeds at which cars pass through a checkpoint are normally…

Q: Private nonprofit four-year colleges charge, on average, $26,186 per year in tuition and fees. The…

A: a. The random variable X be the cost for a randomly selected college which follows normal…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

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Q: length of a cutthroat trout in Pyramid lake. A friend claims that the average length of trout caught…

A: As given, Let x be a random variable representing the length of a cutthroat trout in Pyramid lake.…

Q: Exercise 1: The weight of a random scone sold by your favorite bakery has a mean of 105g I a…

A: Given: μ = 105 σ = 5 Formula Used: Z-score= X-μσn

Q: The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean…

A: Let X denote the amount of calories consumed by customers at the Chinese buffet is normally…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

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Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A:

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 78…

A: Note: According to our guidelines we can answer only three subparts and rest can be repost.

Q: What is the standard deviation of the he final exam grade distribution for all students in the…

A: Given grade (x) probability (p)  x*p x2  x2 *p 0 0.03 0 0 0 1 0.08 0.08 1 0.08 2 0.17 0.34…

Q: The average diameter of sand dollars on a certain island is 5.00 centimeters with a standard…

A: From the provided information,

Q: (a) through​ (c) below. a. Find the mean and the standard deviation for the numbers of girls in…

A: sample size (n)=45proportion (p) =.5

Q: Five males with a particular genetic disorder have one child each. The random variable x is the…

A: Obtain the value of the mean of the random variable X. The value of the mean of the random variable…

Q: Soda comes in cans where the amount of carbonated refreshment contained in each can is normally…

A: given datanormal distributionμ=12.1  ouncesσ=0.12  ouncesS is amount of liquid∴S~Normal(12.1,0.12)

Q: The length of a fully grown hibiscus plants is normally distributed and has a mean of 35cm and a…

A: Given that,Mean(μ)=35standard deviation(σ)=4     The random variable  is length of fully grown…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: Approach to solving the question:The question is about the mean and standard deviation.Detailed…

Q: The average time a person spends at the Barefoot Landing Seaquarium is 94 minutes. The standard…

A: We have given that.   X~N( μ , ?^2 )   μ=94 , ?=18   Z-score =( x - μ )/?

Q: A normal population has a mean of of 60 and standard deviation of 12. A random sample of 9 is…

A: Using normal distribution we find the given probability.

Q: A grocery​ store's receipts show that Sunday customer purchases have a skewed distribution with a…

A: From the provided information, Mean (µ) =29 Standard deviation (σ) = 21 Sample size (n) = 307 For…

Q: Let x be a ramdom variable that represents the IQ score of an adult. Then x has a normal…

A: The mean of the data is 100. The standard deviation of the data is 25.

Q: The months of July to October are considered rainy season in the Philippines as multiple weather…

A: E(X)=∑ixi p(xi)E(X)=0×0.12+(1×0.20)+(2×0.33)+(3×0.25)+(4×0.10)E(X)=0+0.20+0.66+0.75+0.4E(X)=2.01

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: In this case, each couple has only options of "having a girl" (defined as success) or "not having a…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: a) There are 48 couples among which the probability of girl is 0.5. Hence, n = 48 and p = 0.5.

Q: A lawyer commutes daily from his home to his office. The average time for a one-way trip is 24…

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Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: The number of couples consists in the group, The probability of a girl,

Q: a. Find the probability that a randomly selected student will complete the test in less than 49…

A: (a) Obtain the probability that a randomly selected student will complete the test in less than 49…

Q: Americans receive an average of 19 Christmas cards each year. Suppose the number of Christmas cards…

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Q: Americans receive an average of 16 Christmas cards each year. Suppose the number of Christmas cards…

A: The normal distribution is the most useful theoretical distribution for continuous variables.…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: a. μ= 25, σ=3.5b. low= 18, high= 32c. C. The result of 35 girls is significantly high since it is…

Q: A radar unit is used to measure the speed of cars at NLEX. NLEX records show that the measures of…

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Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: a. The mean for the number of girls in groups of 40 births is, μ=np=40×0.5=20 Thus, the mean for the…