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Molodets [167]
3 years ago
13

A reporter claims that 90% of American adults cannot name the current vice president of the United States. To investigate this c

laim, the reporter selects a random sample of 50 American adults and finds that 28 are unable to name the current vice president. The reporter would like to know if the data provide convincing evidence that fewer than 90% of American adults are unable to name the current vice president. Are the conditions for inference met?
Group of answer choices

Yes, the conditions for inference are met.

No, the Large Counts Condition is not met.

No, the 10% condition is not met.

No, the randomness condition is not met.
Mathematics
2 answers:
Vlad1618 [11]3 years ago
7 0

Answer: B

Step-by-step explanation:

No, the Large counts conditio is not met

Marianna [84]3 years ago
4 0

Answer:

Not A or D

Step-by-step explanation:

edge 21

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A random sample of 145 students is chosen from a population of 4,250 students. The mean IQ in the sample is 130, with a standard
snow_tiger [21]

Answer:

Approximately, the 90% confidence interval for the students' mean IQ score is between 129.045 - 130.956

Step-by-step explanation:

The formula to use to solve this question is called the Confidence Interval formula.

Confidence interval =

x ± z × ( σ/ (√n) )

Where:

x = the sample mean = 130

z = the z-value for 90% confidence = 1.645

σ = standard deviation = 7

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130 - 0.9562687005 = 129.0437313

130 + 0.9562687005 = 130.9562687005

Therefore, approximately, the 90% confidence interval for the students' mean IQ score is between 129.045 - 130.956

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