Answer:
$10 profit
Step-by-step explanation:
560+280=840
850-840=10
The number is 500. 500×7=3,500.
Answer:
95%
Step-by-step explanation:
About 95% of the area is within two standard deviation in standard normal distribution. This can be explained by finding the probability within 2 standard deviation using standard normal distribution.
P(z1<Z<z2)=P(-2<Z<2)
P(-2<Z<2)=P(-2<Z<0)+P(0<Z<2)
P(-2<Z<2)=0.4772+0.4772
P(-2<Z<2)=0.9544
Thus, About 95% of the area is between z2 and z2
This polynomial has 2 terms, hence the prefix 'bi-' in <em>binomial</em>.
