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Leviafan [203]
2 years ago
10

A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to mo

nth. The results of a study of 108108 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month?
Mathematics
1 answer:
Bogdan [553]2 years ago
3 0

Answer:

<u>No</u>

<u>Step-by-step explanation:</u>

Remember, for a hypothesis or claim to be rejected it means it either passed or was below the assumed range of values.

However, in this case there was no mention of the range of values, just a statement by the highway department executive who claims that the number of fatal accidents which occur in her state does not vary from month to month.

We therefore, cannot use the results of the study of 108,108 fatal accidents as a basis for rejection as it lacks sufficient information.

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Express these system specifications using the propositions p “The user enters
Alex73 [517]

Answer:

a) r ⋀~p

b)(r⋀p)⟶q

c) ~r ⟶ ~q

d) (~p ⋀r) ⟶q

Step-by-step explanation:

To solve this question we will make use of logic symbols in truth table.

We are told that;

p means "The user enters

a valid password,”

q means “Access is granted,”

r means “The user has paid the

subscription fee”

A) The user has paid the subscription fee, but does not enter a valid

password.”

Fist part of the statement is correct and so it will be "r". Second part of the statement is a negation and will be denoted by ~p. Since both statements are joined together in conjunction, we will use the conjuction symbol in between them which is "⋀" Thus, we have; r ⋀~p

B) Still using logic symbols, we have;

(r⋀p)⟶q

⟶ means q is true when r and p are true.

C) correct symbol is ~r ⟶ ~q

Since both statements are negation of the question. And also, if ~r is true then ~q is also true.

D) Similar to answer A to C above, applying similar conditions, we have (~p ⋀r) ⟶q

8 0
3 years ago
Is (-2, 6) a solution to this system of linear equations? (HINT: Substitute x
Serggg [28]

Answer:

1st Equation: -8x + y = 22

At (-2,6)

(-8*-2)+ 6 =16+6= 22: That is correct

2nd Equation: -8x - y =10

At (-2,6)

(-8*-2)-6= 16-6= 10: That is correct

Both are correct.

Hope it helps you.

5 0
3 years ago
Find the gradient of the line segment between the points (-4,-5) and (2,-4).
Anna11 [10]

Answer:

   1/6

Step-by-step explanation:

The gradient of the line segment is the same as slope

m = (y2-y1)/(x2-x1)

   = ( -4 - -5)/( 2 - -4)

   = (-4+5)/( 2 +4)

   1/6

8 0
2 years ago
Read 2 more answers
Mary can either take her lunch or buy it at school. It cost 1.95 to buy lunch. If she wants to spend no more than $30 on lunch p
yaroslaw [1]

Answer:

She can buy 15 lunches.

Step-by-step explanation:

1.95x15=29.25

3 0
2 years ago
I’m stuck on this question
Harrizon [31]

Answer:

x= 0.4

Step-by-step explanation:

x^2 = 4/25 (0.16)

x = 0.4                        Square root both sides

4 0
2 years ago
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