3 years ago

¡¡. PLEASE HELP !!!!

Mathematics

1 answer:

Artyom0805 [142]3 years ago

6 0

The answer to question 3 is 4

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3 years ago

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Answer:

The test statistic is $t = 3.744$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 140$

The The level of significance is $\alpha = 0.05$

The sample size is n = 18

The null hypothesis is $H_o : \mu = 140$

The alternative hypothesis is $H_a : \mu > 140$

The sample mean is $\= x = 155$

The standard deviation is $\sigma = 17$

Generally the test statistics is mathematically represented as

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3 years ago

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Answer:

1.0

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Step-by-step explanation:

3*0=0

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3*2=6

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