1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SIZIF [17.4K]
3 years ago
11

Joshua spends 25 minutes of each day reading. Let d be the number of days that he reads, and let m represent the total minutes o

f reading. Determine which variable is independent and which is dependent. Then, write an equation that models the situation. Make a table showing the number of minutes spent reading over 7 days.
Mathematics
1 answer:
zavuch27 [327]3 years ago
3 0

Answer:

The number of days are independent and the total number of minutes are dependent.

The required model for the situation is m=25d

The table is shown below:

Step-by-step explanation:

Consider the provided information.

Joshua spends 25 minutes of each day reading. Let d be the number of days that he reads, and let m represent the total minutes of reading.

We need to determine which variable is independent and which is dependent.

Here, the number of days are independent and the total number of minutes are dependent.

If he spends 25 minutes each day. So the total number of minutes in d days are:

m=25d

The required model for the situation is m=25d

Now make the table which showing the number of minutes spent reading over 7 days.

Substitute the value of d from 1 to 7 in m=25d

Number of days(D)        Minutes(M)

          1                                 25

          2                                 50

          3                                 75

          4                                 100

          5                                 125

          6                                 150

          7                                 175

You might be interested in
An insurance company states that it settles 85% of all life insurance claims within 30 days. A consumer group asks the state ins
BlackZzzverrR [31]

Using the z-distribution, it is found that since the p-value of the test is less than 0.05, we reject the null hypothesis and find that there is enough evidence to conclude that the true proportion of all life insurance claims made to this company that are settled within 30 days is less than 85%.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is not enough evidence that the proportion is below 85%, that is:

H_0: p \geq 0.85

At the alternative hypothesis, it is tested if there is enough evidence that the proportion is below 85%, that is:

H_0: p < 0.85

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested at the null hypothesis.
  • n is the sample size.

For this problem, the parameters are:

p = 0.85, n = 250, \overline{p} = \frac{203}{250} = 0.812

Hence the test statistic is:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = \frac{0.812 - 0.85}{\sqrt{\frac{0.85(0.15)}{250}}}

z = -1.68

<h3>What is the p-value and the conclusion</h3>

Using a z-distribution calculator, with a left-tailed test, as we are testing if the proportion is less than a value, and z = -1.68, the p-value is of 0.0465.

Since the p-value of the test is less than 0.05, we reject the null hypothesis and find that there is enough evidence to conclude that the true proportion of all life insurance claims made to this company that are settled within 30 days is less than 85%.

More can be learned about the z-distribution at brainly.com/question/16313918

#SPJ1

4 0
1 year ago
The letters of the alphabet are written on cars and placed in a brown paper bag. What is the probability of drawing a vowel, rep
Oksanka [162]

Answer:

25 / 676

Step-by-step explanation:

There are 5 vowels in the alphabets, and there are 26 alphabets in total as a whole.

The probability of drawing a vowel kb first trial is going to be

5 / 26, total number of vowels and total number of alphabets as a whole.

Again, we're told to replace the picked vowel, and pick another vowel, so that will once again be

5 / 26.

To get the final answer, we multiply both answers by each other

5 / 26 * 5 / 26 = 25 / 676.

Therefore, the probability has been found to be 25 / 676

6 0
3 years ago
PLEASE ANSWER FAST WILL GIVE BRAINLIEST
Yuliya22 [10]

you will save $84***

8 0
3 years ago
3 * 9 + (6 + 5 – 3) – 12 : 4 =
xeze [42]

Answer:

23,4

Step-by-step explanation:

7 0
3 years ago
There are four blue marbles, an unknown number of red (r) marbles, and six yellow marbles in a bag. Which expression represents
MAXImum [283]

Answer:

There are a total of 4 + r + 6 marbles in the bag

The probability of a blue is  \frac{4}{10+r}  

The probability of a red is  \frac{r}{10+r}  

The probability of choosing a blue, replacing it and then a red is

\frac{4}{10+r} × \frac{r}{10+r}  =  [tex]\frac{4r}{100+20r+ r^{2} /[tex]

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • What two rational numbers are less than 1.6 but greater than -1.6
    14·1 answer
  • PLEASE HELP!!!! I NEED TO GRADUATE HIGH SCHOOL!
    11·1 answer
  • Name and describe all the angles in the drawing below
    6·2 answers
  • What is 1/10 of 3,000
    11·2 answers
  • Can Anybody Check My Answers for both 3 and 4. I will give Brainliest Answer.
    6·1 answer
  • Which point on the number line represents a score of 0
    13·1 answer
  • Write 75% as a decimal and fraction in simplest form.<br> SHOW ALL WORK.
    15·1 answer
  • 48 people attended the Sunday matinee to watch a film. .Three over 8 of the people went to see a romantic comedy. .One over six
    7·1 answer
  • A marker costs $0.99. A pad of paper costs $1.25 more than the marker, which is a more reasonable estimate for the total cost of
    7·1 answer
  • Can someone please help it’s very important, give a full description please
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!