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Ainat [17]
3 years ago
6

With a height of 69 ​in, Ronald was the shortest president of a particular club in the past century. The club presidents of the

past century have a mean height of 73.7 in and a standard deviation of 2.6 in. a. What is the positive difference between Ronald​'s height and the​ mean? b. How many standard deviations is that​ [the difference found in part​ (a)]? c. Convert Ronald​'s height to a z score. d. If we consider​ "usual" heights to be those that convert to z scores between minus2 and​ 2, is Ronald​'s height usual or​ unusual?
Mathematics
1 answer:
maxonik [38]3 years ago
7 0

Answer:

????

Step-by-step explanation:

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Buy 5 for $12 and buy 4 for $15
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A fair coin is flipped 10 times. What is the probability that exactly 4 of the 10 flips come up heads
kifflom [539]

105/2^9

Step-by-step explanation:

The probability of getting a head in a single toss

p=12

The probability of not getting a head in a single toss

q=1−12=12

Now, using Binomial theorem of probability,

The probability of getting exactly r=4 heads in total n=10 tosses

=10C4(1/2)4(1/2)10−4

=10×9×8×7/4! 1/2^4 1/2^6

=2^44⋅9⋅35/24(2^10)

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5 0
2 years ago
Read 2 more answers
T - 6.2 < 4 help me please
enyata [817]

Answer:

t < 10.2

Step-by-step explanation:

Step 1: Add 6.2 to both sides.

  • t - 6.2 + 6.2 < 4 + 6.2
  • t < 10.2

Therefore, the answer is t < 10.2.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

6 0
2 years ago
A bank account has an initial deposit of $14,000. After 8 years, the bank account
Kamila [148]

Answer:

2.3%

Step-by-step explanation:

18000 = 15000( 1 + i)^8

Divide both sides by 15000

1.2 = (1 + i)^8

Take both sides to the 1/8 power

1.2^(1/8) = 1 + i

1.023051875220463 = 1 + i

Subtract 1 from both sides

i = 0.023051875220463

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3 years ago
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Answer:

1814400

Step-by-step explanation:

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