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The principal of a school claims that 30% of the grade 11 students eat lunch
in school. A survey among 500 grade 11 students revealed that 150 of them
stayed in school during lunch. Use 95% confidence to conduct a test of
proportions.
1.645
z = 3.294
13
Step 1:Statistical
Hypotheses and
Direction of Test
H0 :
H1 :
Statistical Test :
Direction of Test :
Step 2: Level of Significance
and Critical Value
α :
zCV :
Step 3: Test Statistic zTV :
Step 4: Normal curve
Step 5: Findings and
Decision
Step 6: Interpretation
Step 7: Conclusion
The principal of a school claims that 30% of the grade 11 students eat lunch
in school. A survey among 500 grade 11 students revealed that 150 of them
stayed in school during lunch. Use 95% confidence to conduct a test of
proportions.
1.645
z = 3.294
13
Step 1:Statistical
Hypotheses and
Direction of Test
H0 :
H1 :
Statistical Test :
Direction of Test :
Step 2: Level of Significance
and Critical Value
α :
zCV :
Step 3: Test Statistic zTV :
Step 4: Normal curve
Step 5: Findings and
Decision
Step 6: Interpretation
Step 7: Conclusion
A toy company wishes to put a new toy in the market for the Christmas season. It does not want to do so if the manufacturing process produces more than 10% of toys that do no work. In a test run producing 80 of the toys, 10 are found to be defective. Based on the sample evidence, should the company continue to put a new toy in the market? Use 0.05 level of significance.
not exceeding 25V when it is connected to the main power supply a step-down transformer with 50 turns in the primary coil is used.Calculate the number of turns in the secondary coil when the voltage of the main power supply is 112V.
Draw a diagram by which you can visually explain to learners in the Intermediate Phase why the sum of five consecutive numbers is equal to the fifth multiple of the middle number. Choose any set of five consecutive numbers to illustrate your statement. Write down your explanation in four powerful sentences.
An electrical appliance works with a voltage not exceeding 25V when it is connected to the main power supply a step-down transformer with 50 turns in the primary coil is used.Calculate the number of turns in the secondary coil when the voltage of the main power supply is 220V.
Draw me a simple diagram of a step down transformer showing the core,primary winding and the secondary winding.
A simple diagram of a step down transformer showing the core ,primary winding and secondary winding
Determine the force between two positively charged particles that are separated by a distance of 3.71cm and that have charges of 1.4 x 10-5C and 3.2 x 10-5C.
Using proof by contraposition, show that if n is an integer and 5 added to its cube is odd then n is even. Before showing your solution, rewrite the statement to the proper form of a conditional statement then assign variables to the simple propositions. Show also the contrapositive form of the simple propositions before proceeding to your solution.
