need 711 Question 113 are related to the following The heigh

need 7-11

Question 1-13 are related to the following: The height (in inches) of a random sample of 8 National Basketball Association players is 71 73 74 76 78 79 80 Sum of x: 3x= 598 602 604 608 2 Sum of squared x: Xx3- 46150 46276 46398 46479 3 Sum of x squared: (x)2 367279 368074 368869 369664 The mean of x: 76.5 76.0 75.7 75.4 5 Sum of squared x minus n times squared mean: 3x2-ni- 68.00 67.70 67.40 67.10 6 Deviation of the height of the shortest player from the mean height: X1-i -4.50 4.75 5.00 5.25 7 Deviation of the height of the tallest player from the mean height: x8-X- 4.00 4.25 4.50 4.75 8 Sum of deviations: (x-,-- 0.025 0.02 0.025 Sum of squared deviations: (x- . 67.25 67.50 67.75 68.00 10 Variance of the height: sz 9.466 9.584 9.714 8.500 11 Standard deviation of the height: s 2.915 2.624 2.362

Solution

X

Sum of deviations

Sum of squared deviations

71

-5

25

73

-3

9

74

-2

4

76

0

0

77

1

1

78

2

4

79

3

9

80

4

16

0

68

Mean

76.000

Variance

9.714

Stdev

3.117

7. Option a, 80-76= 4
8. Option b
9. Option d
10. Option c
11. Option a

	X	Sum of deviations	Sum of squared deviations
	71	-5	25
	73	-3	9
	74	-2	4
	76	0	0
	77	1	1
	78	2	4
	79	3	9
	80	4	16
		0	68
Mean	76.000
Variance	9.714
Stdev	3.117