Answer:
The alternate hypothesis is that newborn infants has a mean weight of 7.56 pounds.
Step-by-step explanation:
Let's find an alternate hypothesis by using the formula:
mean=(sum of all data)/(number of data points) so:
sum of all data=9.0+7.3+6.0+8.8+6.8+8.4+6.6=52.9 and:
number of data points=7 so:
mean=52.9/7=7.56 pounds
The alternate hypothesis is that newborn infants has a mean weight of 7.56 pounds.
4) 1 mi/6min * 60 min/1h = 1/10 mi/h = 0.1 mi/h
5) 175 mi *1 h/50 mi = 3.5 h
6) Mr. Smith - 9 min -from school to the park.
Mr. McNeil walks twice as fast, that means if s is a speed of Mr. Smith,
then 2s is a speed of Mr. McNeil.
Distance from school to the park = 9*s, distance from school to the park and back = 2*9*s.
Time= Distance/Speed
For Mr. McNeil:
Time from school to the park and back= distance from school to the park and back/ speed of Mr. McNeil = 2*9*s/2s = 9 min.
Answer:
Let, height of the Building = x
Height of the Tower = y
Height of the tower is 5 times from height of the building = y = 5x
Height of the tower is 52 meter taller than the building = y-x = 52
put 5x instead of y in the equation y-x=52
5x-x=52
4x=52
x=52/4
x=13 meter
y=5x
y=5(13)
y=65 meter
So since x= sand bags replace x with 0 so 7y=105 is left divide by 7 and you get y=15 so 15 bags
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