Answer: D) 
Step-by-step explanation:
Based on the provided information, we have
Sample size: n= 15
sample mean: 
Sample standard deviation: s= $20
Since the population standard deviation is not known, we utilize a t-test.
For a significance level of 95% confidence: 
Critical t-value : 
[Using the Student's t-value table]
The required 95% confidence interval yields:-
Thus, the sought-after 95% confidence interval for the mean amount spent by credit card customers during their initial visit to the new store in the mall, assuming normal distribution of the spending amounts, is:
Answer:
Each coordinate pair indicates the quantity of crates and its associated cost. You can calculate the unit rate by performing division to find the y-value when the x-value equals 1.
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
If two quantities have a direct variation, their graph will originate from the point of intersection at the origin.
Among all graphs, only Nikiya's intersects the origin, thus the answer is B.
Answer:
A histogram will be utilized to illustrate the right wrist size of the random sample of newborn infants.
Step-by-step explanation:
A histogram serves as a visual representation of the frequency distribution present within the sample. Given that wrist circumference can take on positive real number values, a histogram with defined class boundaries can be constructed to display the overall distribution of wrist sizes in the graph.
Furthermore, as this distribution is continuous in nature, a histogram proves to be a fitting choice compared to either a bar graph or a stem-and-leaf plot.
Answer:
The exponential equation can be expressed as A = 600(1.04)^15
After 15 years, the value of the mutual fund will be $1,081
Step-by-step explanation:
The worth of the mutual fund after a specific number of years can be represented by the compound interest formula shown below;
A = P(1 + r/n)^nt
In this formula, A stands for the mutual fund's value after 15 years, P represents the principal amount invested, which is $600, r denotes the interest rate at 4% or 0.04 (thus, 4% = 4/100 = 0.04), n indicates the number of times compounding occurs per year (in this case, it is done once a year), and t represents the number of years, which is 15.
Now, substituting in these values gives us;
A = 600(1 + 0.04/1)^15
A = 600(1.04)^15
A = $1,081 approximately
