Answer:
a)$21 b)$32 c)$52.5
Step-by-step explanation:
a) 84/4=$21
b) 128/4=$32
c) 210/4=$52.5
Plug in the x+3 for y.
8x-x+3=12
7x=9
X=1.3
Then, y= -0.25
Answer:
The correct option is C. either a t test or an analysis of variance can be performed.
Step-by-step explanation:
Consider the provided information.
- The t-test, is used for whether the means of two groups are equal or not. The assumption for the test is that both groups are sampled from normal distributions with equal variances.
- Analysis of Variance (ANOVA) is a statistical method evaluating variations between two or more methods. ANOVA is used in a study to analyze the gaps between group methods.
- ANOVA is used not for specific differences between means, but for general testing.
- The chi-squared test is often used to evaluate whether there was a significant difference in one or more groups between the predicted frequencies and the observed frequencies.
Hence, Either a t test or an analysis of variance can be performed to determine whether the means of two population are equal.
Therefore, the correct option is C. either a t test or an analysis of variance can be performed.
The answer is -403
The order of operations puts multiplication before subtraction. -1 x 372= -372, and -372-31= -403
