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Verdich [7]
3 years ago
6

Please help me ......

Mathematics
1 answer:
Elan Coil [88]3 years ago
4 0
Egudbschsien eiodnebevieneb
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Solve for x
Tems11 [23]

Answer:

---------

Step-by-step explanation:

x-3= -9

x= -9/ 3

x= -3

( -3x)-5 =16

-3x = 16+5

×= 21/-3

x = -7

8 0
2 years ago
john and jack found a coin on the sidewalk. they argued about whether the coin is fair. john claimed a 40% chance for the coin t
expeople1 [14]

Since it is observed that I z I = 3.464 > 1.96 it is concluded that the null hypothesis is rejected.

Therefore we reject John's claim.

Here:

we can use 1 sample proportion test to check the claim of John

H₀ : p₀ = 0.4

H₁ : p₀ ≠ 0.4

Test statistic is

z = p - p₀/√p₀(1-p₀)n

Let X be the random variable denoting the number of heads.

Now p = X/n

= 8/50

= 0.16

p₀ = 0.4

1-p₀ = 1-0.4

= 0.6

z = -3.464

since it is observed that I z I = 3.464 > 1.96 it is concluded that the null hypothesis is rejected.

Therefore we reject John's claim.

Learn more about Null hypothesis here:

brainly.com/question/15980493

#SPJ4

6 0
1 year ago
maze going to the lake to visit some friends at the lake is 60 miles away and Renee is driving 40 mph the entire time how long w
mojhsa [17]

Answer:

it will take her an hour and 25 minutes roughly

Step-by-step explanation:

7 0
3 years ago
What is the value of x that makes the given equation true?
makvit [3.9K]
The answer is c x=1 hope it helps
7 0
2 years ago
Find the median of the data. 12,33,18,28,29,12,17,4,2
galben [10]

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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