Statistics 1060: Practice Solutions Week 9

- 5.67
(table value: 0.9535)

- 6.1
- a)
kg.
- b)
,
so the
confidence interval is
to
63.59 kg. Since 65 kg is well above the upper confidence limit, we have good evidence that
kg.

- 6.3
- a)
1 kg is 2.2 pounds, so
lbs.
- b
lbs.
- c
Either compute
,
or convert the confidence limits from
6.1: 132.0 to 139.9 lbs.

- 6.7
, or 11.01 to 12.55 years.

- 6.9
, or 31.84 to 38.34.

- 6.10
- take

*n*= 68.

- 6.11
- a)
points.
- b)
points.
- c)
- take
*n*= 62, which is under the 100 student maximum.

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