Express each of the following in km/h.

There are 13 brunettes and 7 blondes in a Spanish class. The teacher selects two students to run an errand. How many possible ou

Delicious77 [7]

Answer:

91 possible outcomes

Step-by-step explanation:

As the teacher selects a brunette followed by a blonde, we just need to find the number of possibilities of choosing a brunnette and the number of possibilities of choosing a blonde:

number of possibilities of choosing a brunette: 13

number of possibilities of choosing a blonde: 7

Then, the number of possible outcomes is the product of these number of possibilities:

13 * 7 = 91 possible outcomes

8 0

2 years ago

Merrill is playing a simple game of dice. For every 6 rolled, Merrill will win $5. For any other number, he must pay $2. How muc

Schach [20]

Solution -

The probability of getting 6 from a single roll of a fair dice = $\frac{1}{6}$

The probability of getting any other number rather than 6 would be $1-\frac{1}{6} = \frac{5}{6}$

So when the outcome is 6, then he wins $5 ,otherwise he has to pay $2

So

E(X) = Expectation value = $(\frac{1}{6} )(5) - (\frac{5}{6} )(2)$ ( ∵ $5 gain so +ve and $2 loss so -ve)

= $\frac{-5}{6}$

∴ So Merrill will lose $\frac{5}{6}$ dollar

7 0

3 years ago

Read 2 more answers

4/9 is equivalent to 8/18 ?

jeka57 [31]

Answer:

yes

Step-by-step explanation:Because if you divide 8/18 by 2 you get 4/9 so yes

3 0

2 years ago

Read 2 more answers

Find the product of 325 and 14.

Fed [463]

Answer:

The answer is 4550.

Step-by-step explanation:

You jave to multiply 325 by 14 and it gets you to this answer

7 0

3 years ago

Read 2 more answers

A manufacturer of cell phone screens is concerned because 12 percent of the screens manufactured using a previous process were r

astraxan [27]

Null hypothesis: There is no significant association between the existing process and the new process for reducing the population proportion of screens that will be rejected .

Alternative hypothesis :There is a significant association between the existing process and the new process for reducing the population proportion of screens that will be rejected .

Finally the null hypothesis will be rejected and we should accept the alternate hypothesis

Step-by-step explanation:

In the existing process the sample size and population was not known.,but the percentage of rejected screens were given as 12%.,but in the new process out of 100 screens only 6 are rejected

percentage of rejected screens using new process = 6÷ 100 ×100 = 6%

percentage of rejected screens using existing (old) process = 12%

so the new process is the effective one which reduces the rejection rate of screens., hence it is concluded that There is a significant association between the existing process and the new process for reducing the population proportion of screens that will be rejected .

so the null hypothesis will be rejected and we should accept the alternate hypothesis

4 0

2 years ago