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dexar [7]
3 years ago
6

What is the length of the altitude of the equilateral triangle below?

Mathematics
1 answer:
storchak [24]3 years ago
8 0

Answer:

its 63.

Step-by-step explanation:

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1. In order to get more female customers, a new clothing store offers free gourmet coffee and pastry to its customers. The avera
ioda

Answer:

No, the manager is not correct based on the 95% confidence interval.

Step-by-step explanation:

We are given that the average daily revenue over the past five-week period has been $1,080 with a standard deviation of $260, i.e.; X bar = $1080 and s = $260 and sample size, n = 35 .

The Pivotal quantity for 95% confidence interval is given by;

                \frac{Xbar - \mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

where, X bar = sample mean = $1080

                s  = sample standard deviation = $260

                 n = sample size = 35 {five-week}

So, 95% confidence interval for average daily revenue, \mu is given by;

P(-2.032 < t_3_4 < 2.032) = 0.95

P(-2.032 < \frac{Xbar - \mu}{\frac{s}{\sqrt{n} } } < 2.032) = 0.95

P(-2.032 * {\frac{s}{\sqrt{n} } < {Xbar - \mu} < 2.032 * {\frac{s}{\sqrt{n} } ) = 0.95

P(X bar - 2.032 * {\frac{s}{\sqrt{n} } < \mu < X bar + 2.032 * {\frac{s}{\sqrt{n} } ) = 0.95

95% confidence interval for \mu = [ X bar - 2.032 * {\frac{s}{\sqrt{n} } , X bar + 2.032 * {\frac{s}{\sqrt{n} } ]

                                            = [ 1080 - 2.032 * {\frac{260}{\sqrt{35} } , 1080 + 2.032 * {\frac{260}{\sqrt{35} } ]

                                             = [ 990.70 , 1169.30 ]

<em>No, the manager is not correct based on the fact that the coffee and pastry strategy would lead to an average daily revenue of $1,200 because the calculate 95% confidence interval does not include value of $1200.</em>

Therefore, the store manager believe is not correct.

8 0
3 years ago
Danielle had $67 in her piggy bank. She has been saving and currently has $100.50 in her
Shkiper50 [21]

Answer:

she got 33.50 more than she did so she would have over 33% increase

3 0
3 years ago
umuc stat club must appoint a president. a vice president and a treasurer. There are 8 qualified candidates. How many different
zalisa [80]
The best possible solution for this item is to determine the permutation of 8 taken 3 since there are 3 positions and 8 people are qualified. We will use permutation instead of combination because of the specificity of the positions. That is,
                                 8P3 = 336
Thus, there are 336 ways in which the officers can be selected. 
5 0
3 years ago
Firstright answer will get brainlist
avanturin [10]
P:(1/2)=50
p=50*(1/2)=25
5 0
3 years ago
A baseball bat manufacturing company needs to meet a daily target of producing 600 bats to 3,000 bats.
sashaice [31]
The answer to your question will be D.
5 0
3 years ago
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