Question

The accompanying data table describes results from groups of 10 births from 10 different sets of parents. The random variable x represents the number of girls among 10 children. Complete the questions below.

x P(x)

0 0.002

1 0.016

2 0.037

3 0.114

4 0.201

5 0.238

6 0.198

7 0.113

8 0.045

9 0.014

10 0.022

The maximum usual value is (Round to one decimal place as needed.)

The minimum usual value is (Round to one decimal place as needed.)

Based on the result, is 1 girl in 10 births an unusually low number of girls?

A. No, 1 girl is not an unusually low number of girls, because 1 girl is less than the minimum usual value.

B.Yes, 1 girl is an unusually low number of girls, because 1 girl is outside of the range of usual values.

C.Yes, 1 girl is an unusually low number of girls, because 1 girl is less than the maximum usual value.

D. Not enough information is given.

Answer #1

The table for calculation is:

Hence,

Mean = = 5.111

Standard deviation = = 1.764

Therefore,

Maximum usual value = Mean + 2*SD = 5.111 + 2*1.764 =
**8.6**

Minimum usual value = Mean - 2*SD = 5.111 - 2*1.764 =
**1.6**

Yes, 1 girl is an unusually low number of girls, because 1 girl
is outside of the range of usual values. **Option B**
is correct.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 4 minutes ago

asked 44 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago