Answer:
D . The Columbian Exchange
Explanation:
Columbian Exchange and disease
Europeans brought deadly viruses and bacteria, such as smallpox, measles, typhus, and cholera, for which Native Americans had no immunity. On their return home, European sailors brought syphilis to Europe.
Answer:
Salary
Explanation:
Wages earned over the course of a year are a worker's salary. Companies hire employees' labor in a mutually beneficial contract, where employees receive corporate salaries. The other alternatives represent benefits and the wage calculation formula, per hour.
The Confidence Interval of the given random sample survey is gotten as; CI = 13.755 ± 1.456
<h3>What is the confidence Interval?</h3>
We are given the hypotheses as;
Null Hypothesis; H₀: μ = 15
Alternative Hypothesis; Hₐ: μ ≠ 15.
where μ is the mean number of hours worked per week for all students at the college with part-time jobs.
We are told that it has a 95% confidence interval and degree of freedom of df = 25
From the t-table, the t-score = 2.06
The table gives us the standard error as 0.707 and sample mean of 13.755. Thus, we can find the confidence interval as;
CI = 13.755 ± 2.06(0.707)
CI = 13.755 ± 1.456
Read more about Confidence Interval at; brainly.com/question/17097944
Answer:
√9 will be 3 and thus the value of y