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sleet_krkn [62]
3 years ago
6

The median salary for a chiropractor in the United States is $81,500 per year, according to the U.S. Department of Labor. A grou

p of recent graduates believe this amount is too low. In a random sample of 205 chiropractors who recently graduated, 170 began with a salary of more than $81,500 and five earned a salary of exactly $81,500. State the null hypotheses and alternate hypotheses.
Mathematics
1 answer:
dsp733 years ago
7 0

Answer:

attached

Step-by-step explanation:

attached

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A) b=2 i used cos
ivann1987 [24]

Answer:

sin 30=B/C

1/2=B/C

2B=C

B=C/2

3 0
2 years ago
A standard bathtub holds 70 gallons of water. On average, it takes 7 and 1/2 minutes to drain a bathtub. How many gallons of wat
Mrac [35]

Answer:

9\frac{1}{3} gallons of water

Step-by-step explanation:

To find how many gallons of water go down each minute, divide the total number of gallons of water by the number of minutes it takes to drain:

70/7.5

= 9\frac{1}{3}

So, 9\frac{1}{3} gallons of water go down the drain each minute

6 0
2 years ago
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Wanda's Cafe offers two kinds of espresso: single-shot and double-shot. Yesterday afternoon, the cafe sold 75 espressos in all,
strojnjashka [21]

Answer:

68%

Step-by-step explanation:

51/75 × 100% = 68%

5 0
2 years ago
Express the recurring decimal 0.004 as a fraction.
salantis [7]

Answer:

4/999

Step-by-step explanation:

6 0
3 years ago
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how is 0.00023 written in scientific notation? a. 23 x 10–5 b. 2.3 x 10–4 c. 2.3 x 104 d. 0.23 x 10–3
Annette [7]

Answer: 2.3\times10^{-4}


Step-by-step explanation:

We know that Scientific notation is a way to write a very large or a very small number in the product of a decimal form of number [generally between 1 and 10] and powers of ten.

Given number : 0.00023

In scientific notation 0.00023=2.3\times\frac{1}{10000}=2.3\times10^{-4}

Therefore, In scientific notation  0.00023=2.3\times10^{-4}

7 0
3 years ago
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