Sam uses text messaging to communicate. The table below represents a proportional relationship between the number of words Sam t
exts, y, and the time, in minutes, he spends texting, x.
The equation that represents the table is y =
x.
If Sam can text 360 words in 6 minutes, the new equation that would represent this relationship is y =
x.
The equation that represents the table is y =
x.
If Sam can text 360 words in 6 minutes, the new equation that would represent this relationship is y =
x.
1 answer:
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Answer:
The predominant formula that will be used to solve the problem is,
.
Step-by-step explanation:
Kellogg is planning to market a new kind of cereal and wants to determine the percentage of people will like it.
Kellogg will market the cereal if at least half of the people in the population will like it.
So, the company’s research department selected a random sample of 500 persons and asked them to taste it. Of these 500 persons, 280 said they liked it.
The hypothesis to test whether Kellogg will market the cereal is:
<em>H₀</em>: Kellogg will not market the cereal, i.e. <em>p</em> < 0.50.
<em>Hₐ</em>: Kellogg will market the cereal, i.e. <em>p</em> ≥ 0.50.
The decision rule:
A 95% confidence interval for single proportion can be used to draw conclusion about this test.
If the 95% confidence interval consists of the null value, i.e. <em>p</em> < 0.50, then the null hypothesis will not be rejected. But is the confidence interval does not consist of the null value then the null hypothesis will be rejected.
The formula to compute the 95% confidence interval for the proportion of all people who like this cereal is:
Here,
= sample proportion
= critical value of <em>z</em> for <em>α</em> = 0.05
Thus, the predominant formula that will be used to solve the problem is,
.