Stats And Prob

Question 1

Estimate of parameters confidence level 90%

Answer 1

1.65

Question 2

Estimate of parameters confidence level 95%

Answer 2

1.96

Question 3

Estimate of parameters confidence level 99%

Answer 3

2.58

Question 4

Wstimation of parameters confidence interval

Answer 4

X - Za/2 (0/ √n) < u < X + Za/2 (0/ √n)

Question 5

Maximum likely difference between the observed sample mean and the true value of the population mean

Answer 5

Margin of error

Question 6

Find the confidence coefficients, what formula r u gonna use?

Answer 6

N-1 then look at t table

Question 7

Find the interval estimate, what formula to use?

Answer 7

X- Za/2 (O/√n) < u < X + Za/2 (O/ √n)

Question 8

Find the sample size of the given, what formula to use?

Answer 8

N= (za/2 x o)^2
———
E

Question 9

Two types of hypothesis

Answer 9

Null and alternative

Question 10

Rejecting the truth is what type of error ?

Answer 10

Type 1 error

Question 11

Accepting the false hypothesis is what type of error?

Answer 11

Type 2

Question 12

One tailed , 1%

Answer 12

2.33

Question 13

Two tailed 1%

Answer 13

2.575

Question 14

One tailed 5%

Answer 14

1.645

Question 15

Two tailed 5%

Answer 15

1.96

Question 16

One tailed 10%

Answer 16

1.28

Question 17

Two tailed 10%

Answer 17

1.645

Question 18

P>a
P=a
Reject / accept?

Answer 18

Reject

Question 19

P>a
Reject/ Accept?

Answer 19

Accept

Question 20

P hat is ?

Answer 20

Sample proportion

Question 21

P is ?

Answer 21

Population proprotion

Question 22

How to get p hat

Answer 22

X/n

Question 23

How to get q?

Answer 23

1-p

Question 24

Only one variable -correlation

Answer 24

Univariate data

Question 25

Two variables-correlation

Answer 25

Bivariate data

Question 26

.
.
.
.
.
.

Answer 26

Perfect positive correlation

Question 27

+ 1 what interpretation

Answer 27

Perfect correlation

Question 28

0.76 to 1

Answer 28

Very high correlation

Question 29

0.51 to 75

Answer 29

Moderately high correlation

Question 30

O.26 to 0.50

Answer 30

Moderately low correlation

Question 31

0 to 0.24

Answer 31

Very low correlation

Question 32

0

Answer 32

No correlation