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KiRa [710]
3 years ago
5

The letters from the word "alert" are used to form a password into a school computer system. How many 5-letter passowrds can be

formed if the letters can be used more than once?
a. 3125
b. 50
c. 120
d. 625
Mathematics
1 answer:
Sliva [168]3 years ago
6 0
The correct answer is a. 3125

That's because the letter can be used more than once, so if you start and try everything from aaaaa, to ttttt, the possibilities are huge and much larger than any of the lower numbers.
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Answer:

e. The probability of observing a sample mean of 5.11 or less, or of 5.29 or more, is 0.018 if the true mean is 5.2.

Step-by-step explanation:

We have a two-tailed one sample t-test.

The null hypothesis claims that the pH is not significantly different from 5.2.

The alternative hypothesis is that the mean pH is significantly different from 5.2.

The sample mean pH is 5.11, with a sample size of n=50.

The P-value of the test is 0.018.

This P-value corresponds to the probability of observing a sample mean of 5.11 or less, given that the population is defined by the null hypothesis (mean=5.2).

As this test is two-tailed, it also includes the probability of the other tail. That is the probability of observing a sample with mean 5.29 or more (0.09 or more from the population mean).

Then, we can say that, if the true mean is 5.2, there is a probability P=0.018 of observing a sample of size n=50 with a sample mean with a difference bigger than 0.09 from the population mean of the null hypothesis (5.11 or less or 5.29 or more).

The right answer is e.

7 0
3 years ago
So I keep getting 188 or 88 but I got the reminder right I’m not sure what I did wrong
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Answer:

Step-by-step explanation:

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3 0
3 years ago
what is the measure in radians for the center angle of a circle who's radius r = 4 cm and intercepted arc length s = 1.2 ​
Leto [7]

Answer:

Step-by-step explanation:

IF s = 1.2 is in cm,

THEN

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4 0
2 years ago
The perimeter, P, of a rectangle is found using the formula P = 2l + 2w, where l is the length of the rectangle and w is the wid
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Answer:

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Step-by-step explanation:

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SashulF [63]

The correct anwer is False

Explanation

According to the graph, it can be seen that a student has four hours of sleep as the minimum number of hours of sleep; two students have six hours of sleep, four students have six and a half hours of sleep, four have seven hours of sleep, three have seven and a half hours of sleep, five have eight hours of sleep, and one has eight and a half hours of sleep as maximum hours of sleep. Therefore, it can be affirmed that the statement that the difference between the maximum amount and the minimum number of hours is two and a half hours is false because between four hours and eight and a half hours there are four and a half hours of difference. So, the correct answer is False.

8 0
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