Answer:
Step-by-step explanation:
y = x² + 2x - 5
d. D: all real numbers R: (y greater-than-or-equal-to negative 6)
What is 5.48 million in scientific notation?
2 answers:
Answer:
Step-by-step explanation:
We are asked to write 5.48 million in scientific notation.
We know that 1 million in numbers is 1,000,000.
To convert a number into scientific notation, we write number as product of two factors of the number. The first factor is a number between 1 and 10 and second number is power of 10.
Therefore, 5.48 million in scientific notation would be .
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Answer:
The critical value that corresponds to a confidence level of 99% is, 2.58.
Step-by-step explanation:
Consider a random variable <em>X</em> that follows a Binomial distribution with parameters, sample size <em>n </em>and probability of success <em>p</em>.
It is provided that the distribution of proportion of random variable <em>X, </em>, can be approximated by the Normal distribution.
The mean of the distribution of proportion is,
The standard deviation of the distribution of proportion is, .
Then the confidence interval for the population proportion <em>p</em> is:
The confidence level is 99%.
The significance level is:
Compute the critical value as follows:
That is:
Use the <em>z</em>-table for the <em>z-</em>value.
For <em>z</em> = 2.58 the P (Z < z) = 0.995.
And for <em>z</em> = -2.58 the P (Z > z) = 0.005.
Thus, the critical value is, 2.58.
Step-by-step explanation:
For a geometric sequence,
1. The sequence is :
3, 13, 23, 33,...
It is not geometric. It is false
2. The sequence is :
5, -25, 125, -625
So, the sequence is geometric as the common ratio is same. It is true.