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4 years ago

9

Bill earns $12 per hour and works at most 40 hours per week. Identify the independent and depended quantity in the situation, an

d find the reasonable domain and range values

2 answers:

Naily [24]4 years ago

8 0

The independent is the number that usually does not change when another number changes so the independent is how much he makes in an hour. the dependent is the number that relies on another so the number of hours he works will be the dependent. he makes about $480 per week
i really hope i helped you out in some type of way :)))

frosja888 [35]4 years ago

5 0

<span>Independent: how many hours he works Dependent: how much he makes</span>

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2 years ago

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3 years ago

if a car travels 370.3 miles on 52 liters of gas, how many liters of.gas.will take to go 722 miles.if the car travels at the sam

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101.4 liters.

Step-by-step explanation:

First of all we will find mileage of car.

$\text{Mileage of car}=\frac{\text{Total distance traveled}}{\text{Total amount of fuel}}$

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3 years ago

URGENT!!!! Which of the following statements is not true?(1 point) A.) For a complex number written in the form a+bi, the value

baherus [9]

Answer:

The correct option is;

Non of the above

Step-by-step explanation:

Option A is correct when a + b·i is a complex number, the real part = a and the imaginary part = b

Option B.) For the complex number, a + b·i, a and b are real number

Option C) When a number, a + b·i is a complex number, then b ≠ 0

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3 years ago

A study is done to determine if students in the California state university system (sample 1) take longer to graduate, on averag

Debora [2.8K]

Answer:

We conclude that the students in the California state university system take longer to graduate as compared to students enrolled in private universities.

Step-by-step explanation:

We are given that from years of research, it is known that the population standard deviations are 1.5 years and 0.9 years, respectively.

One hundred students from each the California state university system and private universities are surveyed. The California state university system students took on average 4.8 years while the private university students took on average 4.4 years.

<em>Let </em> $\mu_1$ <em> = population average time taken by students in the California state university system to graduate</em>

<em> </em> $\mu_2$ = <em>population average time taken by students in the private universities to graduate</em>

SO, <u>Null Hypothesis</u>, $H_0$ : $\mu_1-\mu_2\leq0$ or $\mu_1 \leq \mu_2$ {means that the students in the California state university system take less than or equal time to graduate as compared to students enrolled in private universities}

<u>Alternate Hypothesis</u>, $H_A$ : $\mu_1-\mu_2 >0$ or $\mu_1>\mu_2$ {means that the students in the California state university system take longer to graduate as compared to students enrolled in private universities}

The test statistics that will be used here is <u>Two-sample z test</u> <u>statistics</u> as we know about the population standard deviations;

T.S. = $\frac{(\bar X_1-\bar X_2)-(\mu_1-\mu_2)}{\sqrt{\frac{\sigma_1^{2} }{n_1} + \frac{\sigma_2^{2} }{n_2}} }$ ~ N(0,1)

where, $\bar X_1$ = sample average time taken by the California state university system students to graduate = 4.8 years

$\bar X_2$ = sample average time taken by the private university students to graduate = 4.4 years

$\sigma_1$ = population standard deviation for California state university system students = 1.5 years

$\sigma_2$ = population standard deviation for private university students = 0.9 years

$n_1$ = sample of California state university system students taken = 100

$n_2$ = sample of private university students taken = 100

So, <em><u>test statistics</u></em> = $\frac{(4.8-4.4)-(0)}{\sqrt{\frac{1.5^{2} }{100} + \frac{0.9^{2} }{100}} }$

= 2.287

<em>Now at 0.10 significance level, the z table gives critical value of 1.2816 for right-tailed test. Since our test statistics is more than the critical value of z so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region.</em>

Therefore, we conclude that the students in the California state university system take longer to graduate as compared to students enrolled in private universities.

5 0

4 years ago