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➷ Multiply 40 by 70 ( a cheat way is to do 7 x 8 and then add 2 zeroes on the end)
40 x 70 = 2800
Then do 40 x 2 ( do 4 x 2 and then add a zero)
40 x 2 = 80
Add these two values together:
2800 + 80 = 2880
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Answer:
Null hypothesis H0: p = 0.01
Alternative hypothesis Ha: p < 0.01
Step-by-step explanation:
The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.
For the case above;
The null hypothesis is that the proportion of people with colon polyps expected to die from colon cancer remains 0.01 with or without colonoscopy.
H0: p = 0.01
The alternative hypothesis is that the proportion of people who die from colon cancer after having polyps removed in a colonoscopy is significantly less than the expected proportion (without a colonoscopy) of 0.01.
Ha: p < 0.01
Answer:
8 people ordered ice cream
Step-by-step explanation:
28/7=4
4x2=8