Help me with this i need this for a test everything i need is in the picture
1 answer:
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Answer:
Claim : Jump distance is less than 16 feet.
A )
n = 19
Since n <30 we will use t test
The mean distance of the sample jumps is 13.2 feet. i.e. x = 13.2 feet
The standard deviation of her jump distance is 1.5 ft i.e. s = 1.5
Formula :
Substitute the values:
B)
degree of freedom df = n-1 = 19-1 = 18
t critical > t statistics
So, we accept the null hypothesis
C) So, the claim is wrong that ump distance is less than 16 feet.
Hence long jump distance must be greater than or equal to 16
Parabolas like have the y-axis as their symmetry axis, so options B and D are surely wrong.
Moreover, parabolas like have the x-axis as their symmetry axis. If
the parabola is concave rightwards, if
the parabola is concave leftwards.
Since your parabola is concave leftwards, the only feasible option is
A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes
Domain x is number of hours
Range y is distance traveled
speed = 12 miles per hour
time = 45 minutes = = 0.75 hours
We know distance formula
Distance = speed * time
Distance = 12 * 0.75= 9 miles
Number of hours x is 0 to 0.75 hours
So domain is { }
Distance is 0 to 9 miles
So range is { }