A. x -13= x+1 (NO SOLUTION)
B. x + 1/2= x - 1/2 (NO SOLUTION)
C. 2(x + 3)=5x + 6 - 3x (TRUE)
D. x - 3 = 2x - 3 - x (TRUE)
E. 3(x - 5) = 2( x - 5) + 2 (TRUE)
I'm no sure what Im supposed to be doing-
But if I'm supposed to determine if true well there you have it
Answer:
whats ur question bc there just says that:
"Valeria walks 1.5 meters per second"
Step-by-step explanation:
Answer:
a) Statement is true
b) Statement incorrect. Company goal is to attend customer at 190 second at the most. So test should be one tail test (right)
c) We have to reject H₀, and differences between sample mean and the hypothesized population mean should not be attributed only to sampling error
Step-by-step explanation:
a) as the significance level is = 0,02 that means α = 0,02 (the chance of error type I ) and the β (chance of type error II is
1 - 0.02 = 0,98
b) The company establishe in 190 seconds time for customer at its ticket counter (if this time is smaller is excellent ) company is concerned about bigger time because that could be an issue for customers. Therefore the test should be a one test-tail to the right
c) test statistic
Hypothesis test should be:
null hypothesis H₀ = 190
alternative hypothesis H₀ > 190
t(s) = ( μ - μ₀ ) / s/√n ⇒ t(s) = ( 202 - 190 )/(28/√100 )
t(s) = 12*10/28
t(s) = 4.286
That value is far away of any of the values found for 99 degree of fredom and between α ( 0,025 and 0,01 ). We have to reject H₀, and differences between sample mean and the hypothesized population mean should not be attributed only to sampling error
If we look table t-student we will find that for 99 degree of freedom and α = 0.02.
Use 80% *25 than you can get 20.
Parenthises
Exponent
Multiply
Divide
Add
Subtract
The answer is true because it comes before subtraction in the phrase PEMDAS.
