If you are pocking a number between 1-20 what is the probability that you will pick a number greater than 14 or less than 4?

If a password must have two letters and three digits how many different passwords are possible?

Aleks [24]

Answer:

6

Step-by-step explanation:

8 0

3 years ago

Use rounding to estimate the product. 8.24 × 5.88 40 45 48 85

marin [14]

The answer would be 48. I hope that helped

8 0

4 years ago

Read 2 more answers

Pierce is making a rectangular frame for a photo collage that has a perimeter of 72.2 inches. The length of the frame is 20.3 in

givi [52]

Answer

x=15.8

Step-by-step explanation:

20.3*2=40.6

72.2-40.6=31.6

31.6/2=15.8

(15.8*2)+(20.3*2)=72.2

20.3*2+x*2=72.2

x=15.8

Hope this helps.

3 0

2 years ago

The average daily volume of a computer stock in 2011 was ų=35.1 million shares, according to a reliable source. A stock analyst

Shtirlitz [24]

Answer:

a

The null hypothesis is $H_o : \mu = 35 .1 \ million \ shares$

The alternative hypothesis $H_a : \mu \ne 35.1\ million \ shares$

b

The 95% confidence interval is $27.475 < \mu < 37.925$

Step-by-step explanation:

From the question the we are told that

The population mean is $\mu = 35.1 \ million \ shares$

The sample size is n = 30

The sample mean is $\= x = 32.7 \ million\ shares$

The standard deviation is $\sigma = 14.6 \ million\ shares$

Given that the confidence level is $95\%$ then the level of significance is mathematically represented as

$\alpha = 100-95$

$\alpha = 5\%$

=> $\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table

The value is $Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{ \sigma }{\sqrt{n} }$

substituting values

$E = 1.96 * \frac{ 14.6 }{\sqrt{30} }$

$E = 5.225$

The 95% confidence interval confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

substituting values

$32.7 - 5.225 < \mu < 32.7 + 5.225$

$27.475 < \mu < 37.925$

6 0

3 years ago

New York State’s "Quick Draw" lottery moves right along. Players choose between one and ten numbers from the range 1 to 80; 20 w

Mrac [35]

Answer:

The Answer is 0,133484. The same number as $(60/80)^7$ or $0.75^7$

Step-by-step explanation:

If the probability of an event occurring is p, then the probability of an event not occurring is 1-p. Therefore if Lester plays one number, then the probability of that number not winning is 1- $\frac{20}{80}$ or 1-0.25, which is $\frac{60}{80}$ or 0.75

$\\$ Two or more events are independent if the occurrence of one does not affect the probability of occurrence of the other. In Lester's game, the probability of a number winning or not winning does not affect the probability of the same number winning or not winning in the next game.

$\\$ In order to find the probability of several events occurring in succession, we multiply the probabilities of the individual events.

$\\$ Therefore if Lester plays one number seven times, the probability that all seven bets lose are $(60/80)^7$ or $0.75^7$

5 0

4 years ago