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kotegsom [21]
3 years ago
15

A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive office (CEO) was at least eight

years. A survey of companies reported in the Wall Street Journal found a sample mean tenure x = 7.56 of years for CEOs with a standard deviation of years s = 6.67 years.
A. Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group.
B. Assume 70 companies were included in the sample. What is the p-value for your hypothesis test?
C. At α = 0.02, what is your conclusion?
Mathematics
1 answer:
viva [34]3 years ago
5 0

Answer:

could be c might be a also

Step-by-step explanation:

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From your home, the route to the store that passes the beach is 2 miles shorter than the route to the store that passes the park
densk [106]

Then, distance of route passes the beach = x

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3 years ago
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In a sample of adult women from the United States, the average height was 164.4 cm and the standard deviation was 6.2 cm. Women
denis23 [38]

Answer:

176.8 cm and 152 cm

420

Step-by-step explanation:

\mu = Mean = 164.4 cm

\sigma = Standard deviation = 6.2

\mu-2\sigma\\ =164.4-2\times 6.2=14.4\\ =152\ cm

\mu+2\sigma\\ =164.4+2\times 6.2=14.4\\ =176.8\ cm

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The percentage of short women is 2.1 %

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So, 420 are expected to be very tall and very short

7 0
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