Answer:
Null hypothesis:
Alternative hypothesis:
Step-by-step explanation:
A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".
The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".
The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".
On this case the claim that we are trying to proof is "A movie streaming company only holds on to a movie in its offering if the movie has had a 4.5 rating or above". So that needs to be on the alternative hypothesis. And the complement should be the null hypothesis.
Null hypothesis:
Alternative hypothesis:
We have another into to complete the test for example:
represent the sample size selected
The value that we want to test
represent the significance level
Confidence =95% or 0.95
Answer:
4800 wpm
Step-by-step explanation:
80 times 60 = 2400
2 times 2400 = 4800
Answer:
113x+2
Step-by-step explanation:
Answer:
<BKC
Step-by-step explanation:
m<DKC = 20°
m<BKD = 70°
m<BKC = m<DKC + m<BKD (angle addition postulate)
m<BKC = 20° + 70° (Substitution)
m<BKC = 90°.
Therefore, the angle that equals 90° in the given figure is angle BKC.
Answer:
Ground speed is 61.67 km /h.
Step-by-step explanation:
Ground speed of aircraft is obtained b the sum of aircraft speed minus the current speed and direction.
For this the given formula is
81-27 cos (255 - 81 )
53.704 km/h
27 sin ( 225 - 81 ) = 2.822 km /h
so ground speed =
= 61.67 km /h