Answer:
= 56.7 miles per hour
Step-by-step explanation:
Step-by-step explanation:
To find the average speed for the entire journey, we need to find the entire distance and the total time
Entire distance = 210 miles + 130 miles = 340 miles
Total time = 3.5 hours and 2.5 hours = 6 hours
Average speed = distance/ time = 340 miles/ 6 hours
= 56.66666666666 miles per hour
Rounding to the nearest tenth
= 56.7 miles per hour
You a line the decimal points right above each other and add the .45 to .8
Answer:
Morgan.
Step-by-step explanation:
The applicant who has the highest z-score would be the one who performs best.
z-score = (s - m)/ d where s = score, m = mean and d = the standard deviation.
Morgan's z-score = (81.7 - 60.9) / 13
= 1.6
Frankie's = (314.8 - 294) / 26
= 0.8.
Rebecca's = (7.5 - 7.2) / 0.6
= 0.5.
Answer:
: p= .78
: p > .78
Step-by-step explanation:
Determining the null and alternate hypotheses of a scenario require several components. The first is if one should use p or mu. This depends on if they are assessing a proportion or a mean, since the publisher states a percentage, you know that they are asking for a proportion, and therefore should use p. Next, they will need to assess what value to use for the hypothesis statements, here only .78 is provided and therefore should be used in both. Finally, it is time to add in the comparison symbols, the null hypothesis always uses an equals sign so it therefore becomes:
: p= .78
The alternate hypothesis then needs to consider if the researchers claim that the new proportion is greater, fewer, or different. In this case it is greater as they think that the ownership is above 78%, so a greater than sign would be used and the final statement would be:
: p > .78
Answer:
g=-1
Step-by-step explanation:
-20=15g-5
Add 5 to both sides
-15=15g
Divide -15 by both sides
G=-1