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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?
Mathematics
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 {\displaystyle {\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
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