na sample of 950 gas stations, the mean standard deviation was $0.011 per gallon probability that the mean price per gallon Vn N-1 0.011 | 950-70 V70 950- 1 ~0.001266 Find the probability that the sample mean x transforming x to a z-score using the formula Press Continue to see more 11

Q: 28. Scores on a test of reading ability for second graders are normally distributed with a mean of…

A: Given: PZ<z=0.15. Now, look for value 0.15 in the left tailed z-table or the value closer to it.

Q: age, indoor cats live to 14 years old with a standard deviation of 2.5 years. Su stribution is…

A: It is given that  mean lifetime of the indoor cats are 14 years and standard deviation is 2.5 years…

Q: A random variable x is normally distributed with a mean u = 213 and a standard deviation o = 8. Find…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of u=100 and a standard…

A: Let X denote IQ scores. It is known- X~N100, 152 To find P[X<121].

Q: Assume that adults have IQ scores that are normally distributed with mean of u = 105 and a standard…

A: Here IQ scores follow N(105,20). We need to find P(85<X<125).

Q: population with mean 69 and standard deviation 10. Let X1 and X a) The probability that X - X2…

A: Given, n1=15μ1=76σ1=7 n2=8μ2=69σ2=10

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 105 and a standard…

A: Solution

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=100 and a standard…

A: Given  A normal distribution,mean=100 and the standard Deviation =15.we need to determine the…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Let "X" be the IQ score of the adults.

Q: ssume that adults have IQ scores that are normally distributed with a mean of u = 105 and a standard…

A:

Q: Use z-test at .05. A principal at a school claims that the students in his school are above average…

A: The mean difference between the population and the sample is calculated using the z test. It is…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and…

A: Given Information:  Mean (u) = 76 mph  Standard deviation (s) = 6 mph

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

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

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A: Obtain the standard z-score for the random variable equals 140 The standard z-score for the random…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Let X the IQ score Given, Mean ( μ)=100 Standard deviation (σ)=15

Q: al.   (f) The middle 50% of IQs fall between what two values?

A: The mean is given as, μ=100. The standard deviation is, σ=15. f. To determine the middle 50% of IQs…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Let "X" be the IQ score of adults.

Q: Assume that adults have IQ scores that are normally distributed with a mean of µ-105 and a standard…

A: Mean(µ) = 105Standard deviations (σ) = 15X ~ N (µ, σ )= N(105, 15)

Q: 28. Scores on a test of reading ability for second graders are normally distributed with a mean of…

A: It is given that the mean is 60 and the standard deviation is 11.

Q: Assume that adults have 1Q scores that are normally distributed with a mean of u = 105 and a…

A:

Q: A test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. Find the z-score…

A: Mean = 66, Standard Deviation =sd=11 Test Score=48.4

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Given X is normal Distributed with mean µ = 100.0 and standard deviation σ = 15.0 now will using…

Q: A study is published with information about ages of people in a particular region. A sample of fNe…

A: Given: data to find: i) range ii) standard deviation iii) standard deviation

Q: Consuit d isC Of TOLmulas.) (a) Find the mean of p, where p is the proportion of objects that are…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A: Obtain the Z-score for the random variable X equals 120. The Z-score for the random variable X…

Q: Let x be a random variable that represents the level of glucose in the blood (milligrams per…

A: Given Information:  Mean (u) = 81 Standard deviation (s) = 45  Sample mean (x) = 40

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 105 and a standard…

A: It is given that the mean is 105 and standard deviation is 15.

Q: Directions: Read and analyze the giver final answer on a separate sheet of pape 1. ILAW…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A: The standard normal variable Z is defined as, Z = (X – µ)/σ, where µ is the mean of the random…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Policy: Since you have asked multiple questions, we will solve the first question for you. If you…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Given information Population mean µ = 100 Standard deviation σ = 20 We have to find the probability…

Q: The mean number of hours of sleep that a college student gets per night is 6 hours with a standard…

A: Given data,Mean μ=6sd    σ=3n=20P(X<5)=?

Q: On average, indoor cats live to 12 years old with a standard deviation of 2.4 years. Suppose that…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A:

Q: Test the hypothesis (using z-test) of each of the following situations. Show complete steps.  An…

A: From the provided information, Sample size (n) = 45 Sample mean (x̄) = 4.62 Standard deviation (s) =…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A:

Q: 15 Select the correct answer. A researcher for a travel company is looking into the prices people…

A: Answer is mentioned below

Q: Hugo averages 72 words per minute on a typing test with a standard deviation of 13 words per minute.…

A: Given that , mean =  = 72 standard deviation =  = 13 x = 69

Q: 88 Translate On average, indoor cats live to 15 years old with a standard deviation of 2.3 years.…

A: Here, mean is 15 and standard deviation is 2.3. a. The distribution of X is X~N(15, 2.32)

Q: A single toss of a fair coin results in either 0 or 1 head, each with probability 1/2. Define H =…

A:

Q: Diameters of balls are normally distributed about the mean of 120mm with a standard deviation of…

A: Given:   The probability that the average diameter will be less than 118mm is obtained…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A: Given that, Mean = 100 Standard deviation = 15

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Given information Mean µ = 105 Standard Deviation σ = 15

Q: g) Find the probability that the sample mean fat consumption of the 31 randomly selected males in…

A: As per our guidelines, we are allowed to answer three sub-parts. Solving g,h,i part   g) The…

Q: You are conducting a study to see if the probability of a true negative on a test for a certain…

A: Given Information: You are conducting a study to see if the probability of a true negative on a test…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u 105 and a standard…

A: Given that, Mean = 105 and Standard deviation = 15

Q: Assume that adults have IQ scores that are normally distributed witha mean of u =100 and a standard…

A:

Q: The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population…

A: According to the given information in this question We need to find the mean of this sample is less…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard…

A: Considering "X=random IQ score" from the IQ score distribution of mean μ=100, and standard deviation…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.