A __________ of statistical individuals in a population is called a sample.

(a)

Infinite set

(b)

finite subset

(c)

finite set

(d)

entire set

Any statistical measure computed from sample data is known as _________.

(a)

parameter

(b)

statistic

(c)

infinite measure

(d)

uncountable measure

Errors in sampling are of  ______.

(a)

Two types

(b)

three types

(c)

four types

(d)

five types

An estimator is a sample statistic used to estimate a  ______.

(a)

population parameter

(b)

biased estimate

(c)

sample size

(d)

census

If probability \(P[|\hat{\theta}-\theta|<\varepsilon] \rightarrow 1\) as \(n \rightarrow \infty\), for any positive \(\varepsilon \) then \(\hat{\theta}\) is said to ________ estimator of \(\theta\).

(a)

efficient

(b)

sufficient

(c)

unbiased

(d)

consistent

Type I error is  ______.

(a)

Accept H₀ when it is true

(b)

Accept H₀ when it is false

(c)

Reject H₀ when it is true

(d)

Reject H₀ when it is false.

The standard error of sample mean is  ______.

(a)

\(\frac { \sigma }{ \sqrt { 2n } } \)

(b)

\(\frac { \sigma }{ { n } } \)

(c)

\(\frac { \sigma }{ \sqrt { n } } \)

(d)

\(\frac { { \sigma }^{ 2 } }{ \sqrt { n } } \)

Probability of rejecting null hypothesis. when it is true is _______

(a)

Type I error

(b)

Type II error

(c)

Sampling error

(d)

Standard error

The Z-value that is used to establish a 95% confidence interval for the estimation of a population parameter is __________

(a)

1.28

(b)

1.65

(c)

1.96

(d)

2.58

A random sample of 500 apples was taken from large consignment and 45 of them were found to be bad. Then the standard error is __________

(a)

0.033

(b)

0.0128

(c)

0.0128

(d)

0.00128