To find Class Intervals when step-deviations, X and Assumed Mean given Find class interval if mean of the following distribution is 33 and assumed mean is 35. Step deviation: Frequency: -3 -2 -1 +1 +2 10 25 30 20 10

Q: The Mean and Standard Deviation of Mathematics Achievement Test are 500 and 100, respectively.(a)…

A: (a) The random variable X is defined as Mathematics Achievement Test which follows normal…

Q: Approximate the mean of the frequency distribution for the ages of the residents of a town. The…

A: The table helps to find the value of mean. Midpoint, m frequency, f fm 4.5 31 139.5 14.5 36…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and…

A: Let X be r.v denoting readings on thermometer and by question, X~N(0,1). Then The sketch that will…

Q: Itemized Charitable Contributions The average charitable contribution itemized per income tax return…

A: Given, μ=792σ=100 Here,…

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

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 pepulation standand Deuation of a Biology Exam Was 500 with stand deviation oF 48 asmume the…

A: We have given that the population mean of the Biology exam was 500 and standard deviation of 48. The…

Q: Gail averages 153 points per bowling game. With a standard deviation of 14.5 points.  Suppose Gail's…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

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Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: Calculation of population mean for the given data: Tax Rate Frequency (f) Midpoint (m) f*m 0.00…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: We have given that  X~N( 0 , 1 ) mu=0 , sigma =1 Z-score =(x-mu)/sigma

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: Frequency distribution of cigarettes tax rate. We have to find out population mean and population…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with a…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Given that: Z is standard normal Distributed with i.e. mean µ =0 and standard deviation σ =1 now…

Q: sume that the readings on the themometers are normally distributed with a mean of 0" and standard…

A: We have find givan normal distribution...

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

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Q: he frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

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Q: Using this table, solve for the population mean, population standard deviation and median. (use 4…

A: Concentration of all the values around the central value of the given data is known as measures of…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and…

A: Given: 2.2​% of the thermometers are rejected because they have readings that are too high and…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

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Q: ften, frequency distributions are reported using unequal class widths because the frequencies of…

A: Given N=741

Q: 54. Find the class intervals if the arithmetic mean of the following distribution is 33 and assumed…

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Q: Find the indicated IQ score The graph to the right depicts 10 scores of adults, and those scores are…

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Q: The graph shows the distribution of the lengths (in seconds) of videos on a popular video-streaming…

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Q: Which of the following statements is not correct? OWhen an interval estimate is associated with a…

A: Given: To explain the correct option is given as;

Q: #10 z Scores: Fawns Fawns between 1 to 5 months old have a body weight that is approximately…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any question so I am solving…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Calculation: Let X denote the temperature reading of a randomly selected thermometer. The…

Q: Suppose baby kittens' weights have a mean of 11.6 and a standard deviation of 1.5. The z-score tells…

A: Ans#- Given,          Mean μ = 11.6  and Standard deviation σ = 1.5         Use formula  z = x - μσ…

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: Provided data is, the frequency distribution for the tax rates is given as:   Tax Rate…

Q: The student will compare empirical data and a theoretical distribution to determine if data from the…

A: Below shown is the random data points of pinky finger lengths of 30 individuals in cm close to 0.5…

Q: Consider the function f(x)=1/x, defined on the interval 1≤ x≤ e . . Find µx , the mean of the…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.2and a standard…

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

Q: Q.3 It is often stated that in frequency distributions there exists the approximate relation Mean…

A: Given: The relation provided is:                                                           Mean…

Q: negatively skewed distribution has = 60, = 10. If this entire distribution is transformed into…

A: According to our guidelines we can answer only first question and rest can be reposted.

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Given  X~ N(0,1^2) Find P(X>a)= ?

Q: The mean score on a driving exam for a group of drivers education students is 72 points with a…

A: Given information: The mean score on a driving exam for a group of drivers education students is 72…

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: Given Frequency distribution: Tax rate Frequency 0.00-0.49 7 0.50-0.99 14 1.00-1.49 6…

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: Given, Tax Rates Frequency 0.00-0.49 7 0.50-0.99 15 1.00-1.49 8 1.50-1.99 8 2.00-2.49…

Q: Consider a value to be significantly low if its z score less than or equal to -2 or consider a value…

A: Mean , μ = 5.30979 Standard deviation , σ = 0.06539 Let x be a random variable The z value is…

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: Here actual mean = 1.502 Actual standard deviation = 1.031 We have to calculate population mean and…

Q: Find the class intervals if the arithmetic mean of the following distribution is 33 and assumed mean…

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Q: Consider a value to be significantly low if its z score less than or equal to - 2 or consider a…

A: Range rule of thumb:The values are significant if it is lies within 2 standard deviations away from…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A:

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A: Given data, Mean=36 sd=10

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Given, μ=0, σ=1p(x<a)=0.90Px-μσ<a-μσ=0.90Pz<a-01=0.90P(z<a)=0.90

Q: Itemized Charitable Contributions The average charitable contribution itemized per income tax return…

A: Given that. μ=$792σ=$105 The limits for the middle 42% of contributions are

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

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Q: Babies born weighing 2500 grams (about 5.5 pounds) or less are called low-birth-weight babies, and…

A: a) It is given that the mean is 3,479 and the standard deviation is 460.

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Here, Z ~ N(0,1) We want to find 83rd percentile. Graph (A) represents 83rd percentile.