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iren [92.7K]
4 years ago
15

The probability of drawing an ace from a deck of cards is 1/13. If you drew one card at a time (and put the card back each time)

for 400 tries, how many times total could you expect to draw an ace
Mathematics
1 answer:
Digiron [165]4 years ago
4 0

Answer:

31 aces

Step-by-step explanation:

To find the number of aces you would expect, take the probability of an aces and multiply by the number of tries

1/13 * 400 =30.76923

Rounding up, approximately 31 aces

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When you reject the null hypothesis, you are stating that what you did in your study significantly changed your sample.
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Svet_ta [14]

Answer:

1, 3, 6, 10, 15, 21, 28, 36. Notice that the first 2 terms are odd, followed by another 2 even terms, and then another 2 odd terms, before 2 even terms again.

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2 years ago
A scientist is studying bacteria and records the number of bacteria over time. The scientists determines that the function N(t)=
Cloud [144]

Answer:

(A) The number of bacteria is originally 300 and increases by 30% every hour

Step-by-step explanation:

I am assuming the function should actually read:

N(t)=300\cdot 1.30^t

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4 years ago
Rite the fraction in order from greatest to least 2/8 5/8 1/8
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4 0
3 years ago
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a university is interested in promoting graduates of its honors program by establishing that the mean GPA of these graduates exc
shusha [124]

Answer:

Step-by-step explanation:

We would set up the hypothesis test.

For the null hypothesis,

µ ≥ 3.5

For the alternative hypothesis,

µ < 3.5

It is a left tailed test.

Since the population standard deviation is given, z score would be determined from the normal distribution table. The formula is

z = (x - µ)/(σ/√n)

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x = sample mean

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σ = population standard deviation

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µ = 3.5

x = 3.6

σ = 0.4

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