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BaLLatris [955]
2 years ago
8

Mark has 8 hours to mow 6 lawn while Tony take 10 hours to mow 8 lawns how many hours will the faster worker take to mow 72 lawn

s?
Mathematics
1 answer:
inessss [21]2 years ago
4 0

Answer: 93.6 hrs

Step-by-step explanation: 8hr ÷ 6yards = 1.3 yards per hr.

72 yards × 1.3 yards per hr = 93.6 hrs

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When we test Upper H 0​: muequals0 against Upper H Subscript a​: mugreater than​0, we get a​ P-value of 0.03. a. What would the
Anastasy [175]

Answer:

(a) The null hypothesis will be rejected.

(b) Type I error

(c) The null hypothesis will not be rejected. The error is type II error.

Step-by-step explanation:

The hypothesis provided is:

H_{0}: \mu = 0\\ H_{a} : \mu > 0

The p-value of the test obtained is 0.03

(a)

Decision rule for hypothesis testing, based on p-value, states that if the p-value is less than the significance level (α) then the null hypothesis is rejected and vice versa.

The significance level is α = 0.10

Then,

p-value = 0.03 < \alpha  = 0.10

Thus, the null hypothesis will be rejected.

Conclusion:

The null hypothesis is rejected stating that the value of μ is more than 0.

(b)

If the decision in​ (a) is an​ error, i.e. the null hypothesis is rejected when in fact it is true, this type of error is known as type I error.

(c)

The significance level is α = 0.01

Then,

p-value = 0.03 > \alpha  = 0.01

Thus, the null hypothesis will not be rejected.

Conclusion:

The null hypothesis was not rejected stating that the value of μ is 0.

If this decision is an error, i.e. the null hypothesis was not rejected when in fact it is false, this type of error is known as type II error.

3 0
3 years ago
Are two lines with the same slope and different y-intercepts always, sometimes, or never perpendicular?
ryzh [129]
They are never perpendicular. They will be parallel and will never meet!  
4 0
3 years ago
Read 2 more answers
HELP ASAP<br> Solve the equation for x.<br> 3x - 5x + 4 = 10 x = <br> PLEASE ANSWER STEP BY STEP
Doss [256]

Answer:

X=-3

Step-by-step explanation:

3x-5x+4=10

-2x=6

x=-3

note:  I wasn’t sure if the equation ended in 10 or 10x. I think it ends at 10 so that is how I solved.

3 0
3 years ago
Express 15x^1/3 y ^1/5 using a radical
9966 [12]

Answer:

C

Step-by-step explanation:

15x^{\frac{1}{3} }y^{\frac{1}{5} }\\\\=15x^{\frac{5*1}{5*3} }y^{\frac{3*1}{3*5} }\\\\=15x^{\frac{5}{15} }y^{\frac{3}{15} }\\\\=15\sqrt[15]{x^{5}y^{3} } \\\\

3 0
3 years ago
Madeline invests $25,000 in an account that offers a compound interest rate of 9.5% per year. Which of the following is the corr
LekaFEV [45]
Use this equation:   Amount after years=Initial investment*(1+Interest rate/time compounded yearly)^number of years*times compounded yearly

So A=25,000(1+.095/1)^8*1
Simplify
A=25000(1.095)^8
Simplify
A=25000(2.07)
Solve
A=$51,671.73

This equation can be used for all problems of this type.

5 0
2 years ago
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