Answer:
x=4
Step-by-step explanation:
5x-4x+2=6
x+2=6
x=6-2
x=4
Answer: Reject the eight- ounces claim.
Step-by-step explanation:
For left tailed test , On a normal curve the rejection area lies on the left side of the critical value.
It means that if the observed z-value is less than the critical value then it will fall into the rejection region other wise not.
As per given ,
Objective : A coffee-dispensing machine is supposed to deliver eight ounces of liquid or less.
Then ,
, since alternative hypothesis is left-tailed thus the test is an left-tailed test.
the critical value for z for a one-tailed test with the tail in the left end is -1.645 and the obtained value is -1.87.
Clearly , -1.87 < -1.645
⇒ -1.87 falls under rejection region.
⇒ Decision : Reject null hypothesis.
i.e. we reject the eight- ounces claim.
Answer:
Step-by-step explanation:
All numbers in scientific notation or standard form are written
,
where m is a number between 1 and 10.
Answer:
Table C
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
Find the value of the constant of proportionality in each table
Table A
For ------>
For ------>
This table has different values of k
therefore
the table A does not represent a proportional relationship
Table B
For ------>
For ------>
For ------>
This table has different values of k
therefore
the table B does not represent a proportional relationship
Table C
For ------>
For ------>
For ------>
For ------>
This table has the same value of k
therefore
the table C represent a proportional relationship
Table D
For ------>
For ------>
For ------>
For ------>
This table has different values of k
therefore
the table D does not represent a proportional relationship
For each x value, add 3 to get y values.
0+3=3
2+3=5
4+3=7
6+3=9
Final answers, respectively: 3,5,7,9