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tangare [24]
1 year ago
11

. In triangle DEF, the measure of angle D is 122º. Angle E is acute, and angle F is 19º. What is the measure of angle F in degre

es?​
Mathematics
1 answer:
MrRa [10]1 year ago
5 0

Answer: 19 degrees is your answer

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

We are given that a statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s = 20.

Let = population mean.

So, Null Hypothesis, : = 100 {means that the population mean is equal to 100}

Alternate Hypothesis, : > 100 {means that the population mean is more than 100}

The test statistics that will be used here is One-sample t-test statistics because we're yet to know about the population standard deviation;

T.S. = ~

where, = sample mean = 98

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n = sample size = 400

So, the test statistics = ~

= -2

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