Chapter 6 Section 3

Which one should go?

• Chapter 4

• Chapter 5

• Chapter 6

• 

What is the population proportion p for the red fishes in our pond?

• 25%

• 50%

• 60%

• 80%

What does n represent? What does p represent?

• n represents the sample size

• n represents the number of samples

• p represents the population proportion

• p represents the sample proportion

n = 250, p = 0.58; P(𝑝̂> 0.61)

• 0.168

• 0.170

• 0.120

• 0.5

Information on a packet of seeds claims that the germination rate is 92%.  You purchase a packet that has 160 seeds in it.   P = 0.92 n = 160

Verify that the sample is large enough.

• The sample is large enough, we have 160 seeds, which is more than 10.

• The sample is large enough. np is 147.2

• The sample is large enough. n(1-p) is 12.8

• The sample is large enough.

  np and n(1-p) are more than 10.

Information on a packet of seeds claims that the germination rate is 92%.  You purchase a packet that has 160 seeds in it.   P = 0.92 n = 160

• 0.0311

• The probability that more than 96% of the seeds will germinate

• 0.1755

• The sample proportion mean

• 0.92

• The probability that less than 90% of the seeds will germinate

• 0.02145

• The sample proportion standard deviation

It is reported that 80% of babies born with cyanosis have a full recovery.

What is the probability that in a group of 320 babies, fewer than 75% will fully recover?

• 1.0
• 0.013

• 0.05

• 0.75

According to Summit Entertainment, 80% of the audience for the opening weekend of the movie Twilight: New Moon was female. If a random sample of n = 100 members of the audience were sampled.

What is the probability that the sample proportion of females would be greater than 0.85?

• 0.1056

• 0.2029

• 0.008

• 0.0127

According to Summit Entertainment, 80% of the audience for the opening weekend of the movie Twilight: New Moon was female. If a random sample of n = 100 members of the audience were sampled.

What is the probability that the sample proportion of females would be between .75 and .78?

• 0.1056

• 0.2029

• 0.008

• 0.0127

• p̂
• 0.9772
• 0.05
• -E99
• p
• 0.025
• not be
• be
• 0.5