I don’t know how to answer the questions

A teacher buys packs of notebooks to give to his students. The ratio of gold notebooks to red notebooks is represented in the ta

Naddika [18.5K]

Answer:

there would be 40 gold notebooks

Step-by-step explanation:

if the ratio is 5g to 3r i took the 24 red and divided it by 3 which gave me 8. I then multiplied 8 by 5 and got 40. so 40:24 is equal to 5:3

4 0

3 years ago

The mean annual income of certified welders is normally distributed with a mean of $50,000 and a population standard deviation o

Bogdan [553]

Using the p-value method, the decision rule is:

|z| < 1.645: do not reject the null hypothesis.

|z| > 1.645: reject the null hypothesis.

<h3>What is the relation between the p-value and the test hypothesis?</h3>

Depends on if the p-value is less or more than the significance level:

If it is more, the null hypothesis is not rejected.

If it is less, it is rejected.

In this problem, we have a two-tailed test, as we are testing if the mean is different of a value. For a significance level of 0.1, the critical value of z(when a p-value of 0.1 is obtained) is of |z| = 1.645, hence the decision rule is:

|z| < 1.645: do not reject the null hypothesis.

|z| > 1.645: reject the null hypothesis.

More can be learned about p-values at brainly.com/question/13873630

#SPJ1

5 0

2 years ago

- 5 represents 5 minutes before a concert starts.

kondor19780726 [428]

Answer:

B. The time when the concert starts.

Step-by-step explanation:

If -5 is five minutes before and 5 is five minutes then 0 would be when it starts.

5 0

3 years ago

John and Martha are contemplating having children, but John’s brother has galactosemia (an autosomal recessive disease) and Mart

Rina8888 [55]

<h2>Answer:</h2>

$Probability=\frac{1}{24}$

<h2>Step-by-step explanation:</h2>

As the question states,

John's brother has Galactosemia which states that his parents were both the carriers.

Therefore, the chances for the John to have the disease is = 2/3

Now,

Martha's great-grandmother also had the disease that means her children definitely carried the disease means probability of 1.

Now, one of those children married with a person.

So,

Probability for the child to have disease will be = 1/2

Now, again the child's child (Martha) probability for having the disease is = 1/2.

Therefore,

<u>The total probability for Martha's first child to be diagnosed with Galactosemia will be,</u>

$Probability=\frac{2}{3}\times \frac{1}{2}\times \frac{1}{2}\times \frac{1}{4}\\Probability=\frac{1}{24}$

(Here, we assumed that the child has the disease therefore, the probability was taken to be = 1/4.)

<em><u>Hence, the probability for the first child to have Galactosemia is $\frac{1}{24}$ </u></em>

3 0

3 years ago

You purchase 26 "parking hours" that you can use over the next month to park

Nadusha1986 [10]

Answer:

The number of weekday hours are 5.

Step-by-step explanation:

<em>Let the number of weekday hours be "x".</em>

<em>The total week hours are 26, then number of weekend hours is (26-x) .</em>

<em>The charges for weekdays are $2 per hour and for weekends $10 per hour.</em>

The total money spent is $220.

$(2)(x) + (26-x)(10) = 220$

$8x = 40$

x = 5.

Thus weekday hours utilized are 5 hours, and weekend are (26-5) 21 hours.

4 0

3 years ago