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max2010maxim [7]
3 years ago
15

NEED HELP ASAP! :((

Mathematics
2 answers:
adell [148]3 years ago
6 0
Line graph or bar graph because it shows you what day of the week you sell more lemonade.
icang [17]3 years ago
6 0

A line graph would show the data over time. I would plot the days along the horizontal axis and each daily profit at points on the vertical axis. I would connect the points with lines. If her profit is increasing each day, I would expect the line height to increase over time.

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Let x denote the courtship time for a randomly selected female–male pair of mating scorpion flies (time from the beginning of in
gavmur [86]

Complete Question:

a) Is it plausible that X is normally distributed?

b) For a random sample of 50 such pairs, what is the (approximate) probability that the sample mean courtship time is between 100 min and 125 min?

Answer:

a) It is plausible that X is normally distributed

b) probability that the sample mean courtship time is between 100 min and 125 min is 0.5269

Step-by-step explanation:

a)X denotes the courtship time for the scorpion flies which indicates that is a real - valued random variable, and since normal distribution is a continuous probability distribution for a real valued random variable, it is plausible that X is normally distributed.

b) Probability that the sample mean courtship time is between 100 min and 125 min

\mu = 120\\n = 50

P(x_{1}  < \bar{X} < x_{2} ) = P(z_{2}  < \frac{x_{2}- \mu }{SD} ) - P(z_{1}  < \frac{x_{2}- \mu }{SD})

SD = \sqrt{\frac{\sigma^{2} }{n} } \\SD = \sqrt{\frac{110^{2} }{50} } \\SD = 15.56

P(100 < \bar{X}

From the probability distribution table:

P(z_{2}  < 0.32 ) = 0.6255\\ P(z_{1}  < -1.29) = 0.0986

P(100 < \bar{X}

6 0
3 years ago
PLZ HELP!!!! WILL MARK BRAINLYIST!!!!
pychu [463]

Answer:

* 5+2k+n

Step-by-step explanation:

Combine all like terms:

7-2 = 5

5k-3k = 2k

n = n

3 0
3 years ago
Solve each inequality(x+4)(x-8)≥0
Stolb23 [73]

Answer: x

≤

−

4

or

x

≥

8

Step-by-step explanation:

8 0
2 years ago
3. Jim invests $3500, compounded annually at 12% for 3 years. What is the total
irga5000 [103]

Answer:

None of the above, it should be $4760

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 12%/100 = 0.12 per year,

then, solving our equation

I = 3500 × 0.12 × 3 = 1260

I = $ 1,260.00

The simple interest accumulated

on a principal of $ 3,500.00

at a rate of 12% per year

for 3 years is $ 1,260.00

3 0
3 years ago
What is 4231 divided by 13 ? Please simplify and show the original answer without simplifying .
Vinvika [58]
Simplified is 325 and not simplified is 325.561
4 0
3 years ago
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