Q18. If x ~ N(100, 25) and a random sample of x of size 16 is obtained. What is the standard deviation of the distribution of the sample mean, x? A. 1.25 B V1.25 C. 25 D. V25 = 5

Q: Use the sum-to-product identity to find an expression that is equivelentto cust 15)- cos(5ØL Frovide…

A: Use sum product identity to find the expression.

Q: In Guilford County North Carolina, all voters are either Republicans or Democrats. 39 percent of the…

A: Based on the given information, n=12, and p=0.39. The probabilities will be obtained as given below:…

Q: 25+2=

A: First we calculate 2^5.2^5= 2x2x2x2x2=32

Q: Redo C please

A: .

Q: Answer number 4

A:

Q: 3&4 please

A: (3) Given that, the normal distribution has a population mean is, μ=50 The expected value of the…

Q: 4+b=30

A: It is addition and subtraction of numbers.

Q: b. P(x > 49000) = P(z > + )3D %3D c. There is a(n) % chance that the mean salary of a random sample…

A: Hello thank you for the question, As you have mentioned question number b & c, answering only…