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antiseptic1488 [7]
3 years ago
11

Activity 1: Matched pairs or independent/separate samples? For each of the prompts below, decide whether the parameter of intere

st is a mean difference (matched pairs, μ_d) or a difference in means (independent samples, μ_1- μ_2). Students want to know if it matters where they have their cell phone screen repaired. A sample of eight cell phones with broken screens was obtained. For each phone, an estimate for the screen repair in U.S. dollars ($) was obtained from a local store, where the phone would be dropped off and picked up, and from an on-line merchant, where the phone needs to be shipped to a national chain and shipped back. Your goal is determining if, on average, the estimate in dollars for the total repair from the on-line merchant is more (possibly because of the added cost of shipping) than the estimate from a local store.
Computers and Technology
1 answer:
cestrela7 [59]3 years ago
6 0

Answer:

:^{)

Explanation:

( ´・・)ノ(._.`)

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elena-s [515]

Answer:

i love money <3

Explanation:

8 0
3 years ago
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What is the difference between spyware and adware?
Sati [7]

Answer:

It's C

Explanation:

Adware displays or directs the users to an advertisement, while spyware performs espionage on the computer`s activity.

8 0
2 years ago
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The points a b c and d lie on a straight line ab:bd = 1:4
pochemuha

The points a b c and d lie on a straight line ab:bd = 1:4 are A line that extends to infinity on both sides and has no curves is called a straight line.AB:BC=3:4.

<h3>What do you call a straight line?  </h3>

A line is simply an object in geometry denoted as an object with no width that extends on both sides. A straight line is just a line with no curves.

  • AC=AB+BC=3+4=7;  AC:CD=2:1, i.e. AC=2;   because we get 2 different lengths for AC, we change the given ratio AC:CD to an equivalent one with AC=7 .
  • As follows: AC:CD = 2 : 1 = 7 : 3.5 (multiply both sides by 3.5 )   Now we have AC:CD = 7 : 3.5 and AD = AC+CD= 7+3.5 = 10.5,, and the answer is: the ratio  BC:AD = 4:10.5.

Read more about the straight line:

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3 0
2 years ago
Design the program in the following way:
natali 33 [55]

Answer:

d = {}

while True:

   name = input("Enter the name of the boat (Press Enter or q to stop): ")

   if name == "" or name == "q":

       break

   time = int(input("Enter the time (in seconds): "))

   d[name] = time

winner_name = min(d, key=d.get)

winner_time = min(d.values())

average_time = sum(d.values()) / len(d.values())

slowest_boat = max(d, key=d.get)

slowest_time = max(d.values())

print(f"Winner name: {winner_name} and its time: {winner_time}")

print(f"Average time: {average_time}")

print(f"Slowest boat: {slowest_boat} and its time: {slowest_time}")

Explanation:

*The code is in Python.

Create an empty map(dictionary) to hold the values

Create a while loop. Inside the loop:

Ask the user to enter the name of the boat. Check if the user presses Enter or q, using if and break

Ask the user to enter the time

Insert these values as key-value pair to the map

When the loop is done:

Find the winner_name, the min() function finds the minimum value in a list. In this case, the key=d.get creates a list of the values in the map. The min(d, key=d.get) returns the key of the minimum value

Find the winner_time, min(d.values()) returns the minimum time in our map

Find the average time, the sum() function, returns the sum of the values in a list. In this case, sums all the values in the map. The len() function finds the count of the values. If we divide the sum of times entered by the count of the times entered, we get the average time

Find the slowest_time, the max() function returns the max of the value in a list. In this case, the maximum value is the slowest time

Print the results

5 0
2 years ago
Serena, an analyst at an environmental agency, wants to prepare a report using data from the Car Emissions database.
konstantin123 [22]

Answer:

The correct answer is:

Option 1: export the query results from the database to a spreadsheet, then export the graph to a document.

Explanation:

Spreadsheets are used to represent numerical data, perform calculations and display the results numerically or graphically.

When using a database, the query results can be exported to other software using the query web address.

So in order to include the graph in her report, Serena will export the result to spreadsheet and then export the graph to document.

Hence,

The correct answer is:

Option 1: export the query results from the database to a spreadsheet, then export the graph to a document.

5 0
2 years ago
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