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navik [9.2K]
2 years ago
6

8. In the first two basketball games, Lee scored a total of

Mathematics
1 answer:
Ira Lisetskai [31]2 years ago
5 0

Answer:

19

Step-by-step explanation:

40-21+19

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Great Granola makes a trail mix consisting of peanuts, cashews, raisins, and dried cranberries. The trail mix sells for $3.50, a
Leno4ka [110]

Answer:

the answer is the average amount of cashews per bag to determine average cost

the amount of variation in ounces of cashews in the bags of trail mix

which factory produces the most consistent ounces of cashews in each bags of trail mix

Step-by-step explanation:

5 0
3 years ago
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Because of staffing decisions, managers of the Gibson-Marion Hotel are interested in the variability in the number of rooms occu
olchik [2.2K]

Answer:

a) s^2 =30^2 =900

b) \frac{(19)(30)^2}{30.144} \leq \sigma^2 \leq \frac{(19)(30)^2}{10.117}

567.28 \leq \sigma^2 \leq 1690.224

c) 23.818 \leq \sigma \leq 41.112

Step-by-step explanation:

Assuming the following question: Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in  the variability in the number of rooms occupied per day during a particular season of the  year. A sample of 20 days of operation shows a sample mean of 290 rooms occupied per  day and a sample standard deviation of 30 rooms

Part a

For this case the best point of estimate for the population variance would be:

s^2 =30^2 =900

Part b

The confidence interval for the population variance is given by the following formula:

\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma^2 \leq \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}

The degrees of freedom are given by:

df=n-1=20-1=19

Since the Confidence is 0.90 or 90%, the significance \alpha=0.1 and \alpha/2 =0.05, the critical values for this case are:

\chi^2_{\alpha/2}=30.144

\chi^2_{1- \alpha/2}=10.117

And replacing into the formula for the interval we got:

\frac{(19)(30)^2}{30.144} \leq \sigma^2 \leq \frac{(19)(30)^2}{10.117}

567.28 \leq \sigma^2 \leq 1690.224

Part c

Now we just take square root on both sides of the interval and we got:

23.818 \leq \sigma \leq 41.112

5 0
3 years ago
How much did she spend
Olenka [21]

Answer:

64%

Step-by-step explanation:

:)

4 0
2 years ago
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If the temperature is -17° F at 8 am, and 23°F at noon, how much did the temperature rise?
dedylja [7]
17 + 23 = 40

The temperature rose 40 degrees.
3 0
3 years ago
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Fractions less then 1/2
Vinvika [58]

Answer:

Step-by-step explanation:

16 fractions less than one half

1/9, 2/9, 3/9, 4/9, 1/8, 2/8, 3/8, 1/7, 2/7, 3/7, 1/6, 2/6, 1/5, 2/5, 1/4, 1/3

4 0
2 years ago
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