56/90
" / " means divide
56 divided by 90 = 0.62 with a line over the 2 because it is repeating
From 2009 to 2017 energy has changed because in 2009 windmills were used and such things and in 2017 modern energy has been created
Answer and Explanation
1. Males taking geometry
Explanation: Find 19% of 30 to find answer
2. B- Between 40-60 minutes
Explanation: Measure the difference between the intervals
3. B is correct.
Explanation: From the graph the actual heart rate=150=150
but calculated heart rate from best fit line=148=148
Difference between actual and calculated=150-148=2=150−148=2
Answer:
P-value = 0.02275
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 12 kilograms
Sample mean,
= 11.5 kilograms
Sample size, n = 4
Alpha, α = 0.05
Population standard deviation, σ = 0.5 kilograms
First, we design the null and the alternate hypothesis
We use one-tailed(left) z test to perform this hypothesis.
Formula:
Putting all the values, we have
We calculate the p-value from the standard z-table:
P-value = 0.02275