Answer:
Step-by-step explanation:
Mean weigth is 3.8
standard deviation 15 =0.5
sd2 =15*(sd₁₅ )²
sd=(15*0.25)^0.5
sd=1.94
z=(3.8-4)/((0.5)/15^0.5)
z=-1.55
p=0.060571
0.060571>.05
true mean weight is less than 4 ounces
test statistic= (sample mean-mean)/((sd of sample)/n^0.5)
test statistic=(3.8-4)/((0.5)/15^0.5)
test statistic=-1.55
Answer:
7x, 4y
Step-by-step explanation:
terms are numbers with variables in expressions. usually able to count because + and - split them
I think it is answer is b
<span>Initial number of the people that belong to a certain social website is 412. It is growing at a rate of 5% every month. It means that every month the number of people is growing 1.05 times. We can calculate how many of them will there be in 9 months: 412 * 1.05^9 = 412 * 1.55 = 638.6. When we round to the nearest whole number: there will be 369 members.</span>
Answer:
x+9
Step-by-step explanation:
f(x) = x, going up 9
that is y=x, going up 9
if you wnat to go up, subtract 9 from y
y -9 = x
y=x+9
convert back to f(x)
f(x) = x+9
