3 years ago

What is the value of x and give a reason

Mathematics

1 answer:

nevsk [136]3 years ago

6 0

Answer:35 degrees

Step-by-step explanation:

I used a protractor

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Assume that there are 365 days in a year, the probability that a person is born on any given day is the same for all days, and e

Artemon [7]

Answer:

Step-by-step explanation:

If each day equal chance then p = Prob that a person is borne on a particular day = 1/365

Each person is independent of the other and there are two outcomes either borne in July or not

p = prob for one person not borne in July = (365-31)/365 = 334/365

a)Hence prob that no one from n people borne in July = $(\frac{334}{365} )^n$

b) p = prob of any one borne in July or Aug = $\frac{(31+31) }{365} =\frac{62}{365}$ =0.1698

X- no of people borne in July or Aug

n =15

P(X>=2) = $15C2 (0.1698)^2*(1-0.1698)^{13} +15C3 (0.1698)^3*(1-0.1698)^{12} +...+15C15 (0.1698)^{15}$

=0.7505

3 0

2 years ago

Convert 86 degrees Fahrenheit to degrees celsius

dybincka [34]

86 degrees Fahrenheit is 30 degrees Celsius

3 0

3 years ago

Read 2 more answers

2) In a set of data that show a normal distribution the mean is 7.8 and the standard deviation is 1.7. What is the proportion of

abruzzese [7]

First, we get the z-score using formula:
z =( X - μ ) / σ

From the problem, we substitute the given values:
z = (9 - 7.8) / 1.7
z = 0.71

From the z-table (one-tailed), for a z-score of 0.7059, the proportion of numbers that are greater than 9 is 0.76.

6 0

3 years ago

HELP WILL GIVE BRAINLIEST IF CORRECT

ss7ja [257]

Answer:

Step-by-step explanation: