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IrinaVladis [17]

3 years ago

10

Macy makes 15 of 20 free throws at basketball practice. What is the experimental probability that she will miss her next free th

row?

1 answer:

My name is Ann [436]3 years ago

7 0

Step-by-step explanation:

she might lose 1/4 of the next free throws

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a sociologist develops a test to measure attitudes towards public transportation and 27 randomly selected subjects are given the

horsena [70]

Answer:

The 95% confidence interval for the mean score is:

$\mu$ ∈ $(67.73,\ \ 84.67)$

Step-by-step explanation:

We want to estimate the population mean, that is, the average score of all the subjects.

An estimator for the population mean μ is ${\overline {x}}$

Since the sample size is $27$ then we use the statistic $t_{\frac{\alpha}{2}}$ with $27-1 = 26$ degrees of freedom

The confidence interval for the mean is:

$({\displaystyle {\overline {x}}} + t_{\frac{\alpha}{2}}\frac{S}{\sqrt{n}},\ \ {\displaystyle {\overline {x}}} - t_{\frac{\alpha}{2}}\frac{S}{\sqrt{n}})$

Where

${\displaystyle {\overline {x}}}=76.2$ is the average score of the sample

$S=21.4$ is the standard deviation of the sample

$n= 27$ is the sample size

$t_{\frac{\alpha}{2}} = 2.056$ for a confidence level of 95% and 26 degrees of freedom

Then confidence interval is

$(76.2 + 2.056\frac{21.4}{\sqrt{27}},\ \ {76.2 - 2.056\frac{21.4}{\sqrt{27}})$

$(76.2 + 8.467,\ \ 76.2 - 8.467)$

$\mu$ ∈ $(67.73,\ \ 84.67)$

7 0

3 years ago

Which numbers are rational.<br> 3<br> 1.8989<br> را با<br> 0.5<br> 2.0

Lerok [7]

Answer:

All of those numbers are rational

3 0

3 years ago

20%of 120 is what number

RSB [31]

$\frac{20}{100} \times 120=?\\\\ \frac{1}{5} \times 120 = ?\\\\ \frac{120}{5}= \boxed {24}$

7 0

3 years ago

Read 2 more answers

What percentage of 130 liters is 6.5 liters?

DochEvi [55]

Answer:

2%

Correct Answer : 2%

Required Percentage = [ (130/(6.5 * 1000)) * 100]% = 2%.

Step-by-step explanation:

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7 0

3 years ago

4. Three hoses are connected end to end. The first hose is

Yuri [45]

Answer:7.25 feet

Step-by-step explanation:

6.25+6.5=12.75

20-12.75=7.25

4 0

3 years ago