Business Statistics - Study Mode

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[#131] Find the probability that in a family of 4 children there will be at least one boy. Assume that the probability of a male birth is $$frac{1}{2}$$.

(A) $$frac{{15}}{{16}}$$

(B) $$frac{3}{9}$$

(C) $$frac{7}{8}$$

(D) $$frac{1}{9}$$

Correct Answer

(A) $$frac{{15}}{{16}}$$

[#132] . . . . . . . . errors are made when we accept a null hypothesis which is not true.

(A) Type II

(B) Type I

(C) Both A and B

(D) None of these

Correct Answer

(A) Type II

[#133] . . . . . . . . is a process of transporting the data from one location to the other

(A) System

(B) Network topology

(C) Network

(D) Data communication

Correct Answer

(B) Network topology

[#134] Six dice are thrown 729 times. How many times do you expect the dice to show five or six?

(A) 160

(B) 200

(C) 233

(D) 130

Correct Answer

(C) 233

[#135] You are given the following information about advertising expenditure and sales. Advertisement (X) Sales (Y) (Rs. in lakh) Arithmetic Mean 10 90 Standard Deviation 3 12 Correlation coefficient between advertising expenditure and sales 0.80. What is the likely sales for advertising budget of Rs. 15 lakh?

(A) Rs. 120 lakh

(B) Rs. 106 lakh

(C) Rs. 58 lakh

(D) Rs. 48 lakh

Correct Answer

(B) Rs. 106 lakh