The distribution of annual earnings of all bank tellers with five years of experience is

skewed negatively. This distribution has a mean of Birr 15,000 and a standard deviation
of Birr 2000. If we draw a random sample of 30 tellers, what is the probability that their
earnings will average more than Birr 15,750 annually?
Required:
 Calculate μ and
x

 Calculate Z for X
 Find the area covered by the interval
 Interpret the results

9 answers

please help me the answer

The distribution of annual earnings of all bank tellers with five years of experience is
skewed negatively. This distribution has a mean of Birr 15,000 and a standard deviation
of Birr 2000. If we draw a random sample of 30 tellers, what is the probability that their
earnings will average more than Birr 15,750 annually?
Required:
 Calculate μ and
x

 Calculate Z for X
 Find the area covered by the interval
 Interpret the results

0.7775

3.555

P = 1/60

The distribution of annual earnings of all bank tellers with five years of experience is skewed negatively. This distribution has a mean of Birr 15,000 and a standard deviation of Birr 2000. If we draw a random sample of 30 tellers, what is the probability that their earnings will average more than Birr 15,750 annually?
Required:
Calculate µ and x •
Calculate Z for X•

Please help me the answer as soon as possible

The distribution of annual earnings of all bank tellers with five years of experience is skewed negatively. This distribution has a mean of Birr 15,000 and a standard deviation of Birr 2000. If we draw a random sample of 30 tellers, what is the probability that their earnings will average more than Birr 15,750 annually.
• Calculate µ and ό×
• Calculate Z for X
• Find the area covered by the interval
• Interpret the results

Answers