Concept explainers
Carefully read through the list of terminology we’ve used in this Unit. Consider circling the terms you aren’t familiar with and looking them up. Then test your understanding by using the list to fill in the appropriate blank in each sentence. Hint: One word is used twice.
axis
bar graph
categorical frequency distribution
classes
commutative
complement
compound interest
coordinates
data
degrees
element
empirical probability
exponential growth
grouped frequency distribution
histogram
interest
intersection
like quantities
linear growth
lower limit
origin
perimeter
pie chart
plotting points
population
probability
raw data
rectangular
representative sample
roster method
sample
scale
scientific notation
set
simple interest
stem and leaf plot
theoretical probability
time-series data
time-series graph
union
universal set
upper limit
Venn diagram
well-defined
x axis
y axis
A _______________ is any collection of objects.
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PATHWAYS TO MATH LITERACY (LL)W/CONNECT
- Mortgage Rates The following table is taken from the website of Freddie Mac. It shows rates for 30-year fixed-rate mortgages since 1970. y=Year r=Mortgagerate 1975 9.05 1980 13.74 1985 12.43 1990 10.13 1995 7.93 2000 8.05 2005 5.87 2010 4.69 2015 3.84 a. Explain in practical terms the meaning of r(2003). b. Use the table to estimate the value of r(2003).arrow_forwardStock Market The week of September 15, 2008 was one of the most volatile weeks ever for the US stock market. The closing numbers of the Dow Jones Industrial Average each day were: What was the overall change for the week? Was it positive or negative?arrow_forwardBACKGROUND INFO: Use the information below to answer the CANCER SURVIVAL questions that follow. Some bronchial cancer patients had the following survival times (in days) after receiving a certain treatment: 20, 37, 63, 64, 72, 81, 138, 151, 155, 166, 166, 223, 245, 246, 450, 459. (The second instance of “166” is not a mistake.) Do these numbers suggest that the average survival time, for all bronchial cancer patients who receive that treatment, is significantly different from 200 days? QUESTION I NEED TO BE ANSWERED: Report an appropriate one-sample hypothesis test and use a 10% significance level. For Step 6 of the six-step process that was taught in this class, what would be the final conclusion? A. The P-value is low so we cannot conclude that the average survival time is significantly different from 200 days. B. The P-value is not very low so our conclusion is that the average survival time is significantly different from 200 days. C. The P-value is not very low…arrow_forward
- Ethan and Drew went on a 10-day fishing trip. The number of smallmouth bass caught and released by the two boys each day is shown in the accompanying data table. Find the population mean and the range for the number of smallmouth bass caught per day by each fisherman. Do these values indicate any differences between the two fishermen's catches per day? Question 1 The range for the number of smallmouth bass caught per day by Ethan is? (Type an integer or a decimal. Do not round.) The population mean for the number of smallmouth bass caught per day by Ethan is (Simplify your answer.) The range for the number of smallmouth bass caught per day by Drew is? The population mean for the number of smallmouth bass caught per day by Drew is (Simplify your answer.) Do these values indicate any differences between the two fishermen's catches per day? Question 2 Draw a dot plot for Ethan. Draw a dot plot for Drew. Which fisherman seems more consistent? Question 3…arrow_forwardPlease help me with this question thank youarrow_forwardNeed help on letters A-G (all questions). Thank you.arrow_forward
- Part 2: The graph below represents the relative frequency of heads that occur (number of heads divided by the total number of tosses) versus the number of times the coin was tossed for the first io00 tosses. The table shows these values, and in addition, the total number of heads for the 991st to 1000th tosses. Use this information to answer the questions below. Long Term Relative Frequency 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 100 200 300 400 500 600 700 800 900 1000 Number of Coin Flips Long Term Relative Frequency Number of 991 992 993 994 995 996 997 998 999 1000 Tosses Number of Heads 511 512 513 513 514 515 515 515 515 515 Relative Frequency of Heads 0.5156 0.5161 0.5166 0.5161 0.5166 0.5171 0.5165 0.516 0.5155 0.515 d) Since the coin is fair, on average, approximately half of the tosses should be heads. So when the coin is tossed 1000 times approximately 500 of the tosses should be heads. What is the actual number of heads for 1000 tosses as given by the chart? e) What is the…arrow_forwardPart 2: The graph below represents the relative frequency of heads that occur (number of heads divided by the total number of tosses) versus the number of times the coin was tossed for the first 1o00 tosses. The table shows these values, and in addition, the total number of heads for the 991st to 1000th tosses. Use this information to answer the questions below. Long Term Relative Frequency 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 100 200 300 400 500 600 700 800 900 1000 Number of Coin Flips Long Term Relative Frequency Number of 991 992 993 994 995 996 997 998 999 1000 Tosses Number of Heads 511 512 513 513 514 515 515 515 515 515 Relative Frequency of Heads 0.5156 0.51610.5166 0.51610.5166 0.5171 0.5165 0.516 0.5155 0.515 a) What is the minimum relative frequency of the number of heads for the tosses between 991 and 1000? b) What is the maximum relative frequency of the number of heads for the tosses between 991 and 1000? c) What is the difference between the minimum relative frequency…arrow_forwardFor the variables below, state whether they are independent, quasi-independent, or dependent variables in this situation. Briefly explain why. Gender Number Grad Frequencies How many women were in the class? Paste the frequency table that shows this data below. woman= 0, Man =1 Number Gender Exam 1 Exam 2 Exam 3 Homework Lab Number grade Letter grade Z-score Absolute z-score 1 0 61 94 76 94 87 82.4 B 0.18 0.18 2 0 99 97 90 100 89 95 A 1.38 1.38 3 0 64 76 69 88 87 76.8 C -0.36 0.36 4 0 77 82 86 98 94 87.4 B 0.66 0.66 5 0 70 89 81 93 97 86 B 0.52 0.52 6 0 67 62 65 60 90 68.8 D -1.13 1.13 7 0 87 83 81 85 68 80.8 B 0.02 0.02 8 0 74 88 65 49 90 73.2 C -0.71 0.71 9 0 91 97 87 81 94 90 A 0.90 0.90 10 0 94 87 77 90 67 83 B 0.23 0.23 11 0 47 72 54 59 63 59 F -2.07 2.07 12 0 81 64 78 84 73 76 C -0.44 0.44 13 0 87 90 81 93 80 86.2 B 0.54 0.54 14 0 96 100 84 97 84 92.2 A 1.12 1.12 15 0 80 76 90 85 85 83.2 B 0.25 0.25 16 0 64 51 69 74 78 67.2 D -1.28…arrow_forward
- An example of nominal data is O number of students Number of correct answers Hair color Nonearrow_forwardI ixl.com/math/grade-5/decimal-nurmber "NC O Fireboy and Water. www.youtu. O Fireboy and Waterg. Wel XL Search topics and skills Learning Diagnostic Analytics A Math A Language arts 成 Science O Social studies E OK Standar Recommendations Fifth grade > G.9 Decimal number lines DQ2 Find the value of y. Write your answer as a decimal number. 48.1 y 48.2 y = Submit Work it out Not feeling ready yet? This can help:arrow_forwardhelp me please.arrow_forward
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