4. According to Sallie Mae surveys and Credit Bureau data, college students carried an average of $3100 credit card debt in 2008. Suppose the probability distribution of the current credit card debts for all college students in the United States is known but its mean is $3100 and the standard deviation is $650. Let ī be the mean credit card debt of a random sample of 300 U.S. college students. (a) What is the probability that the mean of the current credit card debts for this sample is within $75 of the population mean? (b) What is the probability that the mean of the current credit card debts for this sample is lower than the population mean by $60 or more?

Q: Question 12

A: Given: Value of the trading card = $155 (in 2009) Each year increases by = 4.8% = 0.048 To…

Q: Do dominant and subordinate individuals differ in the means of giggle spectral CV?

A: For Group : Dominant Individual Standard Deviation, s: 0.05410 Count, N: 9 Sum, Σx: 2.755…

Q: Question 26

A: We have given a graph which represent the derivative f' of some function f. we have to draw the…

Q: 60. f -1 | f' f" -1

A: According to the sign chart, we have

Q: Question 4 too please.

A:

Q: Question 7

A: 7) (a) The given parametric equations are  x=t+2 and y=t2-1 and t∈-3, 3. Sketch the graph of the…

Q: Question 5

A: From the provided information, Number of trials (n) = 100 Probability of getting tails (p) = 0.5

Q: L43 L2) De termine a para metriaation for right circular cone with vertex and slant height S.…

A: To write the parametrization of a right circular cone: z=x2+y2 xz trace, z=x2+0  =x2z=x yz trace,…

Q: Question 12

A: (12)(a) Given, f(x)=2x-6 such that f:ℝ→ℝThe function f(x) is a linear function. The f(x) is defined…

Q: Question 12

A: We are given the following shapes. For (a), We need to find the volume of the box as a function of…

Q: Question 20

A: Given Data :  General form of the sequence an=2(an-1)+1, a1=4 To Find : The first four terms of the…

Q: The probability distribution table describes Rhonda's movie collection. What is the probability that…

A: Here the given probability distribution table is :-XThriller DramaComedyAction science fiction…

Q: Question 51

A: SOLUTION-

Q: Question 54

A: