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Tasya [4]
4 years ago
12

Assume the readings on thermometers are normally distributed with a mean of 0degreesC and a standard deviation of 1.00degreesC.

Find the probability that a randomly selected thermometer reads between negative 0.12 and 1.02
Mathematics
1 answer:
Oxana [17]4 years ago
6 0

Answer:

0.2983

Step-by-step explanation:

Let X be the reading on thermometer.  Given that X is N(0,1)

We are to find the probability that a randomly selected thermometer reads between negative 0.12 and 1.02

Reqd probability = P(0.12.

Since this x is already normal std variable x=z

i.e. reqd prob = P(0.12

Hence answer is 0.2983

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Likurg_2 [28]
Answer: 5 5/8
Reasoning:

Find the similar denominator between the two fractions, in this case it’s 8. The number 4 can get to 8 by multiplying by 2 so you multiply it by 2 also with the numerator. Add together and you have an improper fraction, if you convert it into a mixed fraction you should get 5 5/8
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A bicycle store costs $2450 per month to operate. The store pays an average of $75 per bike. The average selling price of each b
Murljashka [212]

Answer:

35

Step-by-step explanation:

Breakeven quantity are the number of  units produced and sold at which net income is zero

Breakeven quantity = fixed cost / price – variable cost per unit

Fixed costs are costs that do not vary with output. e,g, rent, mortgage payments

If production is zero or if production is a million, Mortgage payments do not change - it remains the same no matter the level of output.  

Hourly wage costs and payments for production inputs are variable costs

Variable costs are costs that vary with production

fixed cost = $2450

Variable cost = $75

price = $145

(2450) / (145 - 75) = 35

5 0
3 years ago
Please help, I will mark you brainiest, thank you!!
Anestetic [448]
8x + 30=110
110-30=80/8=10
Your answer is x = 10
7 0
3 years ago
What percent of 120 is 7.8?
lora16 [44]

Answer:

6.5%

Step-by-step explanation:

Is means equals and of means multiply

Let P be the percent

P * 120 = 7.8

Divide each side by 120

P* 120/120 = 7.8/120

P = .065

Change to percent form

6.5%

3 0
3 years ago
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