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lukranit [14]
3 years ago
9

Z=ma-b; solve for a Please

Mathematics
1 answer:
Neporo4naja [7]3 years ago
8 0

Answer:

a=_z÷(m-a),a=z÷(m+b),a=z÷(m-b)

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A biologist estimates that 40% of deer in the region carry a certain type of tick. for a sample of 300 deer selectetd at random,
Vesna [10]
Let x be a discrete binomial random variable that measures the number of successes in n trials.
 Let p = 0.4 be the probability of success, that is, the probability that a deer has the aforementioned type of tick.
 So the probability that 124 deer or less have this type of tick is calculated using the probability formula for a binomial distribution.
 P (X <= x) = sum from x = 0 to x = 124 of (300! / ((X! * (300-x)!)) * (P ^ x) * (1-p) ^ n-x.
 Finally the probability is 0.7030
 Below is an image with the formula used and the result

6 0
3 years ago
The mean height of women in a country​ (ages 20-​29) is 64.5 inches. A random sample of 75 women in this age group is selected.
Allushta [10]

Answer:

0.07378

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ/√n, where

x is the raw score = 65 inches

μ is the population mean= 64.5 inches

σ is the population standard deviation = 2.99

n = 75

z = 65 - 64.5 /2.99/√75

z = 0.5/0.345255461

z = 1.4482

Probability value from Z-Table:

P(x<25) = 0.92622

P(x>25) = 1 - P(x<25)

= 1 - 92622

= 0.07378

The probability that the mean height for the sample is greater than 65 ​inches is 0.07378

4 0
3 years ago
Help with both plz I’ll mark brainliest
LekaFEV [45]

Answer:

(1,6) is not a solution and I think the second one is: c I think

Step-by-step explanation:

5 0
3 years ago
The Lopez family is traveling.The trip will take 8 1/4 hours by train or 6 2/3 hours by car.How many hours shorter is the trip b
aleksklad [387]
I think it is 1 and 7/12
3 0
4 years ago
The cost of carpet is 3$ per square foot. How much would it cost to carpet a bedroom that is 11ft by 14 ft?
mars1129 [50]

It would cost $51.33

11 by 14 is 154.

154 divided by 3 is 51.33

3 0
3 years ago
Read 2 more answers
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