Suppose X-N(0,1) and Q1 and Q2 are Chi-Square Random Variables with n, and n2 degrees of freedom, respectively. Which of the following statements are true? I) Q,/X will have T distribution with n, degrees of freedom II) Q/n2+Q2/n, will have a Chi-Square distribution with ng + n2 degrees of freedom. III) x2 will have a Chi-Square Distribution with 1 degree of freedom. IV) (Q,/n1/(Q/n2) will have an F Distribution with ng and n2 degrees of freedom O a)I and III and IV only are true O b) Il and IIl only are true O c) I and III only are true O d) II and IV only are true

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A: solve x2=-169

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A:

Q: to 48x

A: Given expression is:

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A: The given equation is 30x + 25 = 85.

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A:

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A: SOLUTION-

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A: Evaluate 7 + 5x, for x = 10

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A:

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A: