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Afina-wow [57]
3 years ago
12

there are 9000 four digit numbers. 4536 of the four digit numbers have no repeating digits. How many four digit numbers have at

least one repeating digit?
Mathematics
1 answer:
Shtirlitz [24]3 years ago
5 0

This is subtraction:

9,000-4,536=4,464

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Is a saving a variable or fixed expense
ladessa [460]

Answer:

fixed

Step-by-step explanation:

7 0
3 years ago
The mean per capita income is 23,037 dollars per annum with a variance of 149,769. What is the probability that the sample mean
mihalych1998 [28]

Answer:

Probability that the sample mean would be less than 23,013 dollars is 0.2358.

Step-by-step explanation:

We are given that the mean per capita income is 23,037 dollars per annum with a variance of 149,769.

Also, a sample of 134 persons is randomly selected.

Firstly, Let \bar X = sample mean

The z-score probability distribution for sample mean is given by;

              Z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \mu = population mean per capita income = 23,037 dollars p.a.

           \sigma = standard deviation = \sqrt{Variance} = \sqrt{149,769} = 387 dollars p.a

           n = sample of persons = 134

So, probability that the sample mean would be less than 23,013 dollars is given by = P(\bar X < 23,013 dollars)

      P(\bar X < 23,013) = P( \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } } < \frac{23,013-23,037}{\frac{387}{\sqrt{134} } } ) = P(Z < -0.72) = 1 - P(Z \leq 0.72)

                                                                    = 1 - 0.7642 = 0.2358

The above probability is calculated using the z-score table.

<em>Therefore, probability that the sample mean would be less than 23013 dollars if a sample of 134 persons is randomly selected is 0.2358.</em>

4 0
3 years ago
What is the probability that a customer ordered a medium given that he or she ordered a hot drink?
levacccp [35]
48/75 = 0,64 and they want a percentage so 64%
3 0
2 years ago
Read 2 more answers
I need help help please
Nitella [24]

Answer:

I think it is b

Step-by-step explanation:

I hope this is correct

6 0
3 years ago
After Halloween, Chad had 213 bags of candy. If Chad gives 123 bags of candy to his little brother, how many bags of candy will
stellarik [79]

Answer:

90 bag

Step-by-step explanation:

no of bags will he have left=213-123

=90 bags of candy

3 0
2 years ago
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